chore: migrate to pnpm workspaces monorepo with Turborepo

- Restructure directories: apps/api, apps/admin, apps/website
- Add root pnpm-workspace.yaml, turbo.json, .prettierrc, .gitignore
- Rename packages to @inkreach/api, @inkreach/admin, @inkreach/website
- Add shared packages: packages/tsconfig, packages/shared-types
- Add pnpm.onlyBuiltDependencies for native builds
- Update docs: README.md, structs.md
- All three projects build successfully

apps/admin/vite.config.ts

@@ -0,0 +1,37 @@
+import { defineConfig } from 'vite'
+import vue from '@vitejs/plugin-vue'
+import AutoImport from 'unplugin-auto-import/vite'
+import Components from 'unplugin-vue-components/vite'
+import { ElementPlusResolver } from 'unplugin-vue-components/resolvers'
+import { fileURLToPath, URL } from 'node:url'
+
+// https://vite.dev/config/
+export default defineConfig({
+  plugins: [
+    vue(),
+    AutoImport({
+      resolvers: [ElementPlusResolver()],
+      imports: ['vue', 'vue-router', 'pinia'],
+      dts: 'src/auto-imports.d.ts',
+    }),
+    Components({
+      resolvers: [ElementPlusResolver()],
+      dts: 'src/components.d.ts',
+    }),
+  ],
+  resolve: {
+    alias: {
+      '@': fileURLToPath(new URL('./src', import.meta.url)),
+    },
+  },
+  server: {
+    port: 5173,
+    proxy: {
+      '/api': {
+        target: 'http://localhost:3001',
+        changeOrigin: true,
+        rewrite: (path) => path.replace(/^\/api/, ''),
+      },
+    },
+  },
+})