feat: initial dev-configs monorepo

Shared configs for TypeScript projects: ESLint, Prettier, TypeScript,
Vite, Jest, Playwright, Knip. Published as @vigdorov/* npm packages
to Gitea registry.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/vite/package.json

@@ -0,0 +1,27 @@
+{
+    "name": "@vigdorov/vite-config",
+    "version": "1.0.0",
+    "description": "Shared Vite configuration",
+    "type": "module",
+    "main": "dist/index.js",
+    "types": "dist/index.d.ts",
+    "files": ["dist"],
+    "exports": {
+        ".": "./dist/index.js",
+        "./spa": "./dist/spa.js",
+        "./library": "./dist/library.js"
+    },
+    "scripts": {
+        "build": "tsc"
+    },
+    "peerDependencies": {
+        "vite": ">=6.0.0"
+    },
+    "dependencies": {
+        "@vitejs/plugin-react": "^4.5.2"
+    },
+    "devDependencies": {
+        "vite": "^6.3.5",
+        "typescript": "^5.8.3"
+    }
+}