feat: add initial project configuration and smoke tests

- Created pnpm workspace configuration to manage packages.
- Added a placeholder .gitkeep file in the scripts directory.
- Implemented a smoke test script to validate core API and web endpoints.
- Established TypeScript base configuration for consistent compilation settings.
- Introduced Turbo configuration for task management and build processes.

packages/api/tsconfig.json

@@ -0,0 +1,15 @@
+{
+  "extends": "../../tsconfig.base.json",
+  "compilerOptions": {
+    "outDir": "dist",
+    "rootDir": "src",
+    "declaration": true,
+    "emitDecoratorMetadata": true,
+    "experimentalDecorators": true,
+    "paths": {
+      "@davinci/shared": ["../shared/src/index.ts"]
+    }
+  },
+  "include": ["src"],
+  "exclude": ["dist", "node_modules"]
+}