New viewer [#49] (#549)

app: Rewrite of PMTiles viewer (pmtiles.io) [#49, #551, #555, #556]

* Rewrite the app using SolidJS / Tailwind.
* Make the map view mobile friendly.
* Add an archive inspector for viewing the low level structure of PMTiles.
* Add a tile inspector for viewing a single tile in isolation. 
* Support TileJSON.
* Support raster archives.

app/tsconfig.app.json

@@ -0,0 +1,27 @@
+{
+  "compilerOptions": {
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
+    "target": "ES2020",
+    "useDefineForClassFields": true,
+    "module": "ESNext",
+    "lib": ["ES2020", "DOM", "DOM.Iterable"],
+    "skipLibCheck": true,
+
+    /* Bundler mode */
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "isolatedModules": true,
+    "moduleDetection": "force",
+    "noEmit": true,
+    "jsx": "preserve",
+    "jsxImportSource": "solid-js",
+
+    /* Linting */
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUncheckedSideEffectImports": true
+  },
+  "include": ["src"]
+}