[FE]: Support "simple Rally access" on other pages

[AdamPiotrowski91]

Description: Some way to get Rally Data on pages different than Rally, to quickly check some info

Expected Behavior Display some info about a selected Artefact, most likely by choosing (hovering, clicking, etc) a NICE ID only.

OR actual side-panel API with actual page which DOM-scrapes when open.

Some pages that may benefit:

• [ ] GitHub
• [ ] Confluence
• [ ] Any?

Screenshots

N/A

Additional Context & Ad Hoc Info:

Requestor: Me

List of Items to Implement:

• [x] Check validity of Chrome SidePanel API
• [x] SPIKE above list of pages
• [ ] SPIKE what type of data and type of entrypoint we may implement
  • [ ] (idea) clickable Rally NICE IDs
  • [ ] (idea) some "quick access partial data display"
• [ ] Implement Entrypoint
• [ ] Implement Data Display
  • [ ] some way to pin an item which should always be opened
• [ ] (optionally) Test and Validate working on other Chromium browsers