chore(assets): move tsconfig to assets

assets/tsconfig.json

@@ -0,0 +1,16 @@
+{
+  "compilerOptions": {
+    "target": "ESNext",
+    "lib": ["DOM", "DOM.Iterable", "ESNext"],
+    "module": "ESNext",
+    "moduleResolution": "bundler",
+    "strict": true,
+    "noUnusedLocals": true,
+    "allowSyntheticDefaultImports": true,
+    "esModuleInterop": true,
+    "forceConsistentCasingInFileNames": true,
+    "skipLibCheck": true
+  },
+  "include": ["js/**/*.ts"],
+  "exclude": ["node_modules"]
+}