[MBL-1120] Post Campaign Pledge Feature Flag

[scottkicks]

📲 What

A new Feature Flag for the post campaign pledging.

🛠 How

• Updated RemoteConfigFeatures, RemoteConfigFeature+Helpers, RemoteConfigFeatureFlagToolsViewModel.
• Added tests

post_campaign_pledge flag was also added to our Firebase RemoteConfig Dashboard Production, Beta and Alpha apps.

👀 See

✅ Acceptance criteria

• Feature flag is available for use via the featurePostCampaignPledgeEnabled() helper method.
• Feature flag is available in our Firebase RemoteConfig Dashboard
• Updating the flag from our Firebase dashboard updates the app
• We can update the app locally. This change persists and takes priority over the Firebase dashboard flag value. This is for internal testing.

[codecov-commenter]

Codecov Report

Attention: 7 lines in your changes are missing coverage. Please review.

Comparison is base (c294ec4) 83.75% compared to head (97f5a2d) 83.74%.

Files	Patch %	Lines
...Models/RemoteConfigFeatureFlagToolsViewModel.swift	37.50%	5 Missing ⚠️
...ary/RemoteConfig/RemoteConfigFeature+Helpers.swift	80.00%	0 Missing and 1 partial ⚠️
Library/RemoteConfig/RemoteConfigFeature.swift	0.00%	1 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1917      +/-   ##
==========================================
- Coverage   83.75%   83.74%   -0.01%     
==========================================
  Files        1229     1229              
  Lines      112161   112188      +27     
  Branches    29853    29869      +16     
==========================================
+ Hits        93937    93955      +18     
- Misses      17196    17204       +8     
- Partials     1028     1029       +1     

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