build: add basic tsconfig.json

The frontend config now requires a tsconfig for some reason.
Probably update that got in too early.
This is just really basic tscript.json from template, to appease the plugin.

tsconfig.json

@@ -0,0 +1,30 @@
+{
+  "compilerOptions": {
+    "jsx": "react",
+    "sourceMap": true,
+    "moduleResolution": "node",
+    "target": "es5",
+    "allowSyntheticDefaultImports": true,
+    "noErrorTruncation": true,
+    "strict": true,
+    "rootDir": ".",
+    "skipLibCheck": true,
+    "lib": [
+      "dom",
+      "esnext"
+    ],
+    "module": "esnext",
+    "esModuleInterop": true,
+    "resolveJsonModule": true,
+    "isolatedModules": true
+  },
+  "include": [
+    "./src/**/*.ts",
+    "./src/**/*.tsx"
+  ],
+  "exclude": [
+    "./src/entry.ts",
+    "./*.js",
+    "./*.d.ts"
+  ]
+}