refactored adapters to run test suites (#126)

* refactored adapters to run test suites

* fix bun version for tests

* added missing adapter tests and refactored examples to use `bknd.config.ts` where applicable

app/src/adapter/bun/test.ts

@@ -0,0 +1,7 @@
+import { expect, test, mock } from "bun:test";
+
+export const bunTestRunner = {
+   expect,
+   test,
+   mock,
+};