fix(electron): resolve TypeScript errors in Electron build configuration

- Create separate Electron-specific capacitor config
- Update build script to not copy main config to Electron directory
- Fix TypeScript compilation by excluding main config from Electron tsconfig

Resolves TypeScript compilation errors in npm run build:electron:dev

electron/tsconfig.json

@@ -1,6 +1,6 @@
 {
   "compileOnSave": true,
-  "include": ["./src/**/*", "./capacitor.config.ts", "./capacitor.config.js"],
+  "include": ["./src/**/*"],
   "compilerOptions": {
     "outDir": "./build",
     "importHelpers": true,