feat(hub): add implementation for policy hub

[Phil91]

Description

Implementation of the policy hub api

Why

To have a central policy hub

Issue

N/A - Jira Issue: CPLP-3362

Checklist

• I have followed the contributing guidelines
• I have performed IP checks for added or updated 3rd party libraries
• I have created and linked IP issues or requested their creation by a committer
• I have performed a self-review of my own code
• I have successfully tested my changes locally
• I have added tests that prove my changes work
• I have checked that new and existing tests pass locally with my changes
• I have commented my code, particularly in hard-to-understand areas

[evegufy]

@Phil91 as this a mighty PR and you're a committer and this not an outside contribution, could you please open a new PR with the feature branch maintained in the TX GH org?

[Phil91]

@Phil91 as this a mighty PR and you're a committer and this not an outside contribution, could you please open a new PR with the feature branch maintained in the TX GH org?

@evegufy done. recreated the PR for the new branch, see #5 . Therefor i will close this PR