[feat] - enable cilium BGP control plane

[AshleyDumaine]

What type of PR is this?

/kind feature

What this PR does / why we need it: This makes it so workload clusters using Cilium as the CNI can by default start using CiliumBGPPeeringPolicies to allow for Cilium to advertise routes to BGP routers.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

Special notes for your reviewer:

TODOs:

• squashed commits
• includes documentation
• adds unit tests
• adds or updates e2e tests

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 53.83%. Comparing base (2dddcf9) to head (e53f7d9).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #269   +/-   ##
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  Coverage   53.83%   53.83%           
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  Files          27       27           
  Lines        1566     1566           
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  Hits          843      843           
  Misses        673      673           
  Partials       50       50           

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