refactor(utils): renamed packages/pi-utils to packages/utils

- Renamed package directory from packages/pi-utils to packages/utils.
- Updated all path aliases and references in tsconfig.base.json to reflect new package location.
- Updated workspace references in bun.lock and package.json to point to new packages/utils directory.
- Updated documentation and build scripts to reference the renamed utils package.

packages/utils/tsconfig.json

@@ -0,0 +1,8 @@
+{
+	"extends": "../../tsconfig.base.json",
+	"compilerOptions": {
+		"noEmit": true
+	},
+	"include": ["src/**/*.ts", "test/**/*.ts"],
+	"exclude": ["node_modules", "dist"]
+}