feat: initialize TypeScript configuration and Vitest setup

- Add pnpm workspace configuration to specify built dependencies.
- Create tsconfig.json for TypeScript compiler options and module resolution.
- Add tsconfig.build.json for build-specific TypeScript settings.
- Set up Vitest configuration with path aliasing for testing.

.vscode/extensions.json

@@ -0,0 +1,5 @@
+{
+	"recommendations": [
+		"biomejs.biome",
+	]
+}