feat: introduce new CRD for in-process evaluation

[odubajDT]

Part-of: #542

Changes

• introduce new CRD for in-process evaluation configuration
• adapt mutating webhook to support in-process evaluation and injection of env variables
• unit tests
• e2e tests

Follow-up

• adapt documentation

[codecov]

Codecov Report

Attention: Patch coverage is 82.02247% with 32 lines in your changes are missing coverage. Please review.

Project coverage is 86.48%. Comparing base (918a697) to head (5036bbe).
Report is 12 commits behind head on main.

❗ Current head 5036bbe differs from pull request most recent head 49172d0

Please upload reports for the commit 49172d0 to get more accurate results.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #632      +/-   ##
==========================================
- Coverage   88.24%   86.48%   -1.76%     
==========================================
  Files          10       19       +9     
  Lines         961     1539     +578     
==========================================
+ Hits          848     1331     +483     
- Misses         88      168      +80     
- Partials       25       40      +15     

Files	Coverage Δ
apis/core/v1beta1/common/common.go	82.22% <100.00%> (+18.58%)	⬆️
apis/core/v1beta1/featureflagsource_types.go	96.66% <100.00%> (+0.07%)	⬆️
common/common.go	91.66% <ø> (-8.34%)	⬇️
webhooks/common.go	96.00% <66.66%> (-4.00%)	⬇️
webhooks/pod_webhook.go	79.45% <70.21%> (-7.22%)	⬇️
...v1beta1/featureflaginprocessconfiguration_types.go	82.75% <82.75%> (ø)

Flag	Coverage Δ
unit-tests	86.48% <82.02%> (-1.76%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

[toddbaert]

I think we need to substantially rework OFO's documentation, including this. I think it's out of scope of this PR.

cc @Kavindu-Dodan @beeme1mr

[toddbaert]

This looks good to me.

I want to run a manual test with a real workload to confirm everything works end-to-end, and then I'll approve.

[Kavindu-Dodan]

I will review this with a local run tomorrow 🤝

[Kavindu-Dodan]

LGTM :)

Let's address these two concerns prior to merging,

1. Conditional improvement
2. Naming of the new CRD

[Kavindu-Dodan]

LGTM. I like the new CRD name InProcessConfiguration. Left this nit to improve error context. Once accepted, feel free to merge :)