[Embeds] Create vite project and add to build pipeline (#3448)

* add bskyembed vite app

* create build script (temp until embedr is ready)

bskyembed/tsconfig.json

@@ -0,0 +1,23 @@
+
+{
+  "compilerOptions": {
+    "target": "ES5",
+    "lib": ["DOM", "DOM.Iterable", "ESNext"],
+    "types": [],
+    "allowJs": true,
+    "skipLibCheck": true,
+    "esModuleInterop": false,
+    "allowSyntheticDefaultImports": true,
+    "strict": true,
+    "forceConsistentCasingInFileNames": true,
+    "module": "ESNext",
+    "moduleResolution": "Node",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "noEmit": true,
+    "jsx": "react",
+    "jsxFactory": "h",
+    "jsxFragmentFactory": "Fragment"
+  },
+  "include": ["src"]
+}