chore: refactor integ test

feat: enable implicit dependency

docs: fix typo

chore: retry on a 401 error

I haven't actually seen this error but heard sometimes it can happen.

chore: add jitter when retrying a request

fix: request sometimes fails with conflict error (409)

we add retry when conflict is detected.

fix: handle 404 on deletion as success

docs: fix README

fix: remove unnecessary dependencies of opensearch custom resources

closes #1

feat: add integ-test, release to pypi