feat(background): add other in-game backgrouds (1/2)

Co-authored-by: yueqiaocertik <yueqiaocertik@users.noreply.github.com>

libs/initializer.js

@@ -1,7 +1,9 @@
 import path from 'path'
 import { mkdir, copy } from './file.js'
+import { appendMainConfig } from './append.js'
 
 export default function init(operatorName, __dirname, extractedDir) {
     mkdir(extractedDir)
     copy(path.join(__dirname, 'config', '_template.yaml'), path.join(__dirname, 'config', `${operatorName}.yaml`))
+    appendMainConfig(operatorName, __dirname)
 }