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

bunfig.toml

@@ -0,0 +1,13 @@
+# Bun configuration for tstest
+# This enables TypeScript decorator support in Bun runtime
+
+[build]
+target = "bun"
+
+[test]
+preload = []
+
+# Enable decorators for Bun's TypeScript transpiler
+# This ensures user code with decorators works when executed via Bun
+[transpiler]
+experimentalDecorators = true