WIP: Fix Electron build issues and migrate to @nostr/tools

- Fix TypeScript compilation errors in platform services
- Add missing rotateCamera method and isNativeApp property
- Fix index.html path resolution for packaged Electron apps
- Create separate Vite config for Electron renderer process
- Migrate from nostr-tools to @nostr/tools via JSR for ESM compatibility
- Update all Vite configs to handle mixed npm/JSR package management
- Add comprehensive documentation in BUILDING.md
- Fix preload script path resolution in packaged builds

Resolves build failures with deep imports and missing UI in AppImage.

vite.config.electron.renderer.mts

@@ -0,0 +1,25 @@
+import { defineConfig } from 'vite';
+import vue from '@vitejs/plugin-vue';
+import path from 'path';
+
+export default defineConfig({
+  plugins: [vue()],
+  resolve: {
+    alias: {
+      '@': path.resolve(__dirname, 'src'),
+    },
+  },
+  build: {
+    outDir: 'dist-electron/www',
+    emptyOutDir: false,
+    rollupOptions: {
+      input: path.resolve(__dirname, 'src/main.electron.ts'),
+      output: {
+        entryFileNames: 'main.electron.js'
+      }
+    },
+    commonjsOptions: {
+      transformMixedEsModules: true
+    }
+  }
+});