Add core DDEV project management (list/describe/start/stop/restart)

Wire up the full stack for step 2 of the build plan: a ddev.ts CLI
wrapper in the main process (execFile + JSON envelope parsing, with a
PATH fallback since GUI apps on macOS don't inherit Homebrew's PATH),
IPC handlers exposed through a typed preload window.api surface,
TanStack Query hooks for polling/mutations, and a two-pane UI (project
list sidebar + detail panel with URLs, services, and DB credentials).

Verified end-to-end against a real scratch DDEV project: typecheck,
lint, and tests pass, and the running app correctly displays live
project data and reflects state changes (start/stop) via polling.

vitest.config.ts

@@ -6,7 +6,8 @@ export default defineConfig({
   plugins: [react()],
   resolve: {
     alias: {
-      '@renderer': resolve('src/renderer/src')
+      '@renderer': resolve('src/renderer/src'),
+      '@shared': resolve('src/shared')
     }
   },
   test: {