AppModel: Add initial handling of methods (AppMethod)

Il2CppInspector.Common/Model/AppMethod.cs

@@ -0,0 +1,35 @@
+/*
+    Copyright 2020 Katy Coe - http://www.djkaty.com - https://github.com/djkaty
+
+    All rights reserved.
+*/
+
+using Il2CppInspector.Cpp;
+using Il2CppInspector.Reflection;
+
+namespace Il2CppInspector.Model
+{
+    // Class that represents a composite IL/C++ method
+    public class AppMethod
+    {
+        // The corresponding C++ function pointer type
+        public CppFnPtrType CppFnPtrType { get; internal set; }
+
+        // The corresponding .NET method
+        public MethodBase Method { get; internal set; }
+
+        // The VA of the MethodInfo* (VA of the pointer to the MethodInfo) object which defines this method
+        public ulong MethodInfoPtrAddress { get; internal set; } 
+
+        // The VA of the method code itself, or 0 if unknown/not compiled
+        public ulong MethodCodeAddress => Method.VirtualAddress?.Start ?? 0;
+
+        public AppMethod(MethodBase method, CppFnPtrType cppMethod, ulong methodInfoPtr = 0xffffffff_ffffffff) {
+            Method = method;
+            CppFnPtrType = cppMethod;
+            MethodInfoPtrAddress = methodInfoPtr;
+        }
+
+        public override string ToString() => CppFnPtrType.ToSignatureString();
+    }
+}