feat: STAKE-934 add earn controller to engine

[Matt561]

Description

This PR adds the @metamask/earn-controller dependency and follows the modular controller init to add it to the Engine.

Related issues

• STAKE-934: Integrate Earn Controller Package in MM Mobile

Manual testing steps

1. Start the app locally
2. Ensure there isn't a crash: on boot, on account switch, and on network switch

Screenshots/Recordings

N/A

Before

N/A

After

N/A

Pre-merge author checklist

• I’ve followed MetaMask Contributor Docs and MetaMask Mobile Coding Standards.
• I've completed the PR template to the best of my ability
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[socket-security]

New dependencies detected. Learn more about Socket for GitHub ↗︎

Package	New capabilities	Transitives	Size	Publisher
npm/@metamask/[email protected]	None	0	95.2 kB	metamaskbot

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[amitabh94]

LGTM!

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.54%. Comparing base (d1d22d7) to head (93c4ec5).
Report is 7 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #13778      +/-   ##
==========================================
+ Coverage   63.42%   63.54%   +0.12%     
==========================================
  Files        2093     2097       +4     
  Lines       45277    45316      +39     
  Branches     6234     6243       +9     
==========================================
+ Hits        28717    28797      +80     
+ Misses      14676    14637      -39     
+ Partials     1884     1882       -2     

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud