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/typescript/base.json

@@ -0,0 +1,22 @@
+{
+    "compilerOptions": {
+        "strict": true,
+        "target": "ES2022",
+        "module": "ESNext",
+        "lib": ["ES2022"],
+        "moduleResolution": "bundler",
+        "resolveJsonModule": true,
+        "forceConsistentCasingInFileNames": true,
+        "noImplicitReturns": true,
+        "noFallthroughCasesInSwitch": true,
+        "noUnusedLocals": false,
+        "allowUnreachableCode": false,
+        "allowUnusedLabels": false,
+        "allowSyntheticDefaultImports": true,
+        "removeComments": true,
+        "sourceMap": true,
+        "incremental": true,
+        "skipLibCheck": true,
+        "isolatedModules": true
+    }
+}

packages/typescript/package.json

@@ -0,0 +1,11 @@
+{
+    "name": "@vigdorov/typescript-config",
+    "version": "1.0.0",
+    "description": "Shared TypeScript configurations",
+    "type": "module",
+    "files": ["base.json", "react.json"],
+    "exports": {
+        "./base": "./base.json",
+        "./react": "./react.json"
+    }
+}

packages/typescript/react.json

@@ -0,0 +1,7 @@
+{
+    "extends": "./base.json",
+    "compilerOptions": {
+        "lib": ["DOM", "DOM.Iterable", "ES2022"],
+        "jsx": "react-jsx"
+    }
+}