chore(nodejs): testcontainers (#4)

* chore(nodejs): testcontainers

* chore(nodejs): testcontainers

* chore(nodejs): code cleanup

* Revert "chore(nodejs): code cleanup"

This reverts commit 4605076.

* chore(nodejs): code cleanup

* chore(nodejs): print test case name in client interop tests

Author: glasstiger

notes.md

@@ -2,7 +2,5 @@
 > ./scripts/generateCerts.sh . questdbPwd123
 
 ### TODO:
-- Test the client against a real QuestDB instance, not only mock.
-  The easiest way to do it is to use https://www.npmjs.com/package/testcontainers
 - Would be nice to accept alternative logger implementations to be used instead of console
 - If the buffer had to be extended, shrink it back to original size on a subsequent flush() call?