feat(runtime-adapters): Enable TypeScript decorator support for Deno and Bun runtimes and add decorator tests

ts/tstest.classes.runtime.bun.ts

@@ -69,6 +69,9 @@ export class BunRuntimeAdapter extends RuntimeAdapter {
 
     const args: string[] = ['run'];
 
+    // Note: Bun automatically discovers bunfig.toml in the current directory
+    // This ensures TypeScript decorator support is enabled if bunfig.toml is present
+
     // Add extra args
     if (mergedOptions.extraArgs && mergedOptions.extraArgs.length > 0) {
       args.push(...mergedOptions.extraArgs);