Implement Add/Edit/Delete Segment List Modals 2

[zackcl]

Resolves #2336, resolves #2257, resolves #2258, resolves #2338

Changes Include:

• Added addSegmentList endpoint URL (/segments/list) to environment files
• Added addSegmentList, updateSegmentList, and deleteSegmentList functions to segments.data.service.ts for making requests to the backend
• Updated segments actions, effects, and reducer to support adding, updating, and deleting a segment list
• Updated flagId to id in PrivateSegmentListRequest interface for supporting both feature flags and segments
• Updated flagId to id in FeatureFlagListValidator for consistency with the frontend
• Added unit tests for segment list operations to SegmentController.test.ts
• Removed unused functions from feature-flag-exclusions-section-card.component.ts

Endpoints used for adding, updating, and deleting a segment list:

1. On ADD:
   POST /segments/list

2. On EDIT:
   POST /segment

3. On DELETE:
   DELETE /segments/list/:segmentId

[zackcl]

The PR is now ready for review.

[zackcl]

@bcb37 Just to clarify, did you try the app on branch feature/2257-upsert-segment-list2 and not the old feature/2257-upsert-segment-list?

[bcb37]

@bcb37 Just to clarify, did you try the app on branch feature/2257-upsert-segment-list2 and not the old feature/2257-upsert-segment-list?

Yeah I was looking at the old one. Sorry. I'll do a real review now!

[bcb37]

@bcb37 Just to clarify, did you try the app on branch feature/2257-upsert-segment-list2 and not the old feature/2257-upsert-segment-list?

Yeah I was looking at the old one. Sorry. I'll do a real review now!

@zackcl Ok, not only does this work flawlessly, but it fixes the other issue I was talking about on slack!

[bcb37]

Looks good!

[danoswaltCL]

approving also, only thing I see is just adding the new endpoint to the environment.local.example, but this can be merged once updated