refactor: Migrate to monorepo

BREAKING CHANGE: Complete structure overhaul

packages/stl/tsconfig.json

@@ -0,0 +1,10 @@
+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./dist",
+    "declaration": true,
+    "declarationMap": true
+  },
+  "include": ["src/**/*"],
+  "exclude": ["dist", "**/*.test.ts", "**/*.test.tsx", "**/*.stories.tsx"]
+}