WIP: add Electron platform configuration to Capacitor

- Add electron platform section to capacitor.config.json
- Configure deep linking with timesafari:// scheme
- Set up build options for macOS, Windows, and Linux
- Configure output directory and file inclusion
- Add platform-specific build targets (DMG, NSIS, AppImage)
- Support both x64 and arm64 architectures for macOS
- Set appropriate app categories for each platform

This enables building TimeSafari as a native desktop application
using Capacitor's Electron platform while maintaining existing
mobile and web functionality.

src/main.electron.ts

@@ -1,17 +0,0 @@
-import './assets/styles/tailwind.css';
-import { initializeApp } from "./main.common";
-import { logger } from "./utils/logger";
-
-const platform = process.env.VITE_PLATFORM;
-const pwa_enabled = process.env.VITE_PWA_ENABLED === "true";
-
-logger.info("[Electron] Initializing app");
-logger.info("[Electron] Platform:", { platform });
-logger.info("[Electron] PWA enabled:", { pwa_enabled });
-
-if (pwa_enabled) {
-  logger.warn("[Electron] PWA is enabled, but not supported in electron");
-}
-
-const app = initializeApp();
-app.mount("#app");