Add boilerplate files and licenses

tsconfig.json

@@ -0,0 +1,32 @@
+{
+  "compilerOptions": {
+    "target": "ES2020",
+    "useDefineForClassFields": true,
+    "module": "ESNext",
+    "lib": ["ESNext", "DOM", "DOM.Iterable"],
+    "skipLibCheck": true,
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "noEmit": true,
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noFallthroughCasesInSwitch": true,
+    "allowJs": true,
+    "checkJs": false,
+    "esModuleInterop": true,
+    "jsx": "react-jsx",
+    "jsxImportSource": "preact",
+    "paths": {
+      "~/*": ["./src/*"],
+      "react": ["./node_modules/preact/compat"],
+      "react-dom": ["./node_modules/preact/compat"],
+      "react/jsx-runtime": ["./node_modules/preact/jsx-runtime"]
+    },
+    "types": ["preact", "vite/client"]
+  },
+  "include": ["src"],
+  "references": [{ "path": "./tsconfig.node.json" }]
+}