fix(commons): rename tests subfolder to samples to avoid being deleted by tools such as node-prune (#882)

* rename commons sub folder from tests to samples

* update doc

Co-authored-by: Florian Chazal <chazalf@amazon.com>

Author: flochaz

docs/core/logger.md

@@ -1,4 +1,4 @@
 export * from './utils/lambda';
 export * from './Utility';
-export * as ContextExamples from './tests/resources/contexts';
-export * as Events from './tests/resources/events';
+export * as ContextExamples from './samples/resources/contexts';
+export * as Events from './samples/resources/events';