Struct reading and disassembly script overhaul, various misc. loading fixes, bump to .NET 9 (#13)

* Bump projects to .net 9 and update nugets

* add VersionedSerialization + source generator

* migrate versioning to StructVersion class, add handling/detection for 29.2/31.2

* add new struct definitions

* rename serialization methods and add BinaryObjectStreamReader for interop

* Rework metadata struct loading to use new struct versioning

* move 29/31.1/.2 to use tags (-2022,-2023) instead of minor versions

* fix metadata usage validity checks

* rework code registration offsetting a bit and add second 29/31.1 condition

* tweak .1 condition (again)

* 29/31.2 was a psyop

* also remove 29.2 from the readme

* remove loading of packed dlls - this was a very unsafe feature

* support auto-recovering type indices from type handles
fixes loading of memory-dumped v29+ libraries since those replacee their class indices on load with a pointer to the corresponding type

* support loading PEs without an export table

* also read UnresolvedVirtualCallCount on regular v31

* Disable plugin loading for now

* Overhaul disassembler script + add Binary Ninja target (#12)

* Overhaul diassembler scripts:
- No longer defines top level functions
- Split into three classes: StatusHandler (like before), DisassemblerInterface (for interfacing with the used program API), ScriptContext (for definiting general functions that use the disassembler interface)
- Add type annotations to all class methods and remove 2.7 compatibility stuff (Ghidra now supports Python 3 so this is unnecessary anymore)
- Disassembler backends are now responsible for launching metadata/script processing, to better support disassembler differences
- String handling is back in the base ScriptContext class, disassembler interfaces opt into the fake string segment creation and fall back to the old method if it isn't supported

* Add Binary Ninja disassembler script backend
This uses the new backend-controlled execution to launch metadata processing on a background thread to keep the ui responsive

* make binary ninja script use own _BINARYNINJA_ define and add define helpers to header

* Update README to account for new script and binary ninja backend

* implement fake string segment functions for binary ninja but don't advertise support

* also cache API function types in binary ninja backend

* fix ida script and disable folders again

* Fix metadata usage issues caused by it being a value type now

* make TryMapVATR overrideable and implement it for ELFs

* Make field offset reading use TryMapVATR to reduce exceptions

* Fix NRE in Assembly ctor on < v24.2

* Update actions workflow to produce cross-platform CLI binaries, update readme to reflect .net 9 changes

* workflow: only restore packages for projects that are being built

* workflow: tweak caching and fix gui compilation

* workflow: remove double .zip in CLI artifact name

* 29/31.2 don't actually exist, this logic is not needed

Il2CppInspector.Common/Outputs/AssemblyShims.cs

@@ -12,6 +12,7 @@ using System.IO;
 using System.Linq;
 using dnlib.DotNet;
 using dnlib.DotNet.Emit;
+using Il2CppInspector.Next;
 using Il2CppInspector.Reflection;
 
 namespace Il2CppInspector.Outputs
@@ -186,7 +187,7 @@ namespace Il2CppInspector.Outputs
             };
             
             if (mType.IsExplicitLayout || mType.IsSequentialLayout)
-                mType.ClassLayout = new ClassLayoutUser(1, (uint)type.Sizes.nativeSize);
+                mType.ClassLayout = new ClassLayoutUser(1, (uint)type.Sizes.NativeSize);
 
             // Add nested types
             foreach (var nestedType in type.DeclaredNestedTypes)
@@ -241,7 +242,7 @@ namespace Il2CppInspector.Outputs
                 AddMethod(module, mType, method);
 
             // Add token attribute
-            if (type.Definition != null)
+            if (type.Definition.IsValid)
                 mType.AddAttribute(module, tokenAttribute, ("Token", $"0x{type.MetadataToken:X8}"));
 
             // Add custom attribute attributes
@@ -269,7 +270,7 @@ namespace Il2CppInspector.Outputs
             if (field.HasFieldRVA) {
                 // Attempt to get field size
 
-                var fieldSize = field.FieldType.Sizes.nativeSize;
+                var fieldSize = field.FieldType.Sizes.NativeSize;
                 var preview = model.Package.Metadata.ReadBytes((long) field.DefaultValueMetadataAddress, fieldSize);
 
                 mField.InitialValue = preview;
@@ -310,7 +311,7 @@ namespace Il2CppInspector.Outputs
 
             // Add token attribute
             // Generic properties and constructed properties (from disperate get/set methods) have no definition
-            if (prop.Definition != null)
+            if (prop.Definition.IsValid)
                 mProp.AddAttribute(module, tokenAttribute, ("Token", $"0x{prop.MetadataToken:X8}"));
 
             // Add custom attribute attributes
@@ -432,8 +433,8 @@ namespace Il2CppInspector.Outputs
                         ("Offset", string.Format("0x{0:X}", model.Package.BinaryImage.MapVATR(method.VirtualAddress.Value.Start))),
                         ("VA", method.VirtualAddress.Value.Start.ToAddressString())
                     };
-                if (method.Definition.slot != ushort.MaxValue)
-                    args.Add(("Slot", method.Definition.slot.ToString()));
+                if (method.Definition.Slot != ushort.MaxValue)
+                    args.Add(("Slot", method.Definition.Slot.ToString()));
 
                 mMethod.AddAttribute(module, addressAttribute, args.ToArray());
             }
@@ -591,7 +592,7 @@ namespace Il2CppInspector.Outputs
             // Create folder for DLLs
             Directory.CreateDirectory(outputPath);
 
-            if (model.Package.Version >= 29)
+            if (model.Package.Version >= MetadataVersions.V290)
             {
                 // We can now apply all attributes directly.
                 directApplyAttributes = model.TypesByDefinitionIndex
@@ -648,7 +649,7 @@ namespace Il2CppInspector.Outputs
                     AddCustomAttribute(module, module.Assembly, ca);
 
                 // Add token attributes
-                module.AddAttribute(module, tokenAttribute, ("Token", $"0x{asm.ImageDefinition.token:X8}"));
+                module.AddAttribute(module, tokenAttribute, ("Token", $"0x{asm.ImageDefinition.Token:X8}"));
                 module.Assembly.AddAttribute(module, tokenAttribute, ("Token", $"0x{asm.MetadataToken:X8}"));
 
                 if (types.TryGetValue(module, out var shallowTypes))