feat: android sdk connectsign + batch request

[abretonc7s]

Description

• Depends on Connection Refactor PR refactor: Connection class #7895
• Adds android sdk metamask_connectSign + metamask_batch
• Improve loading status

Related issues

Fixes: #

Manual testing steps

1. Go to this page...

Screenshots/Recordings

Before

After

Pre-merge author checklist

• I’ve followed MetaMask Coding Standards.
• I've clearly explained what problem this PR is solving and how it is solved.
• I've linked related issues
• I've included manual testing steps
• I've included screenshots/recordings if applicable
• 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.
• I’ve properly set the pull request status:
  • In case it's not yet "ready for review", I've set it to "draft".
  • In case it's "ready for review", I've changed it from "draft" to "non-draft".

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.

[codecov-commenter]

Codecov Report

Attention: 375 lines in your changes are missing coverage. Please review.

Comparison is base (7b76904) 37.46% compared to head (45648df) 36.58%.
Report is 6 commits behind head on main.

Files	Patch %	Lines
.../core/SDKConnect/handlers/handleConnectionReady.ts	1.69%	58 Missing ⚠️
app/core/SDKConnect/AndroidSDK/AndroidService.ts	0.00%	42 Missing ⚠️
app/core/SDKConnect/SDKConnect.ts	0.00%	41 Missing ⚠️
app/core/SDKConnect/handlers/handleSendMessage.ts	2.56%	38 Missing ⚠️
...ore/SDKConnect/handlers/handleConnectionMessage.ts	2.70%	36 Missing ⚠️
...p/core/SDKConnect/handlers/handleCustomRpcCalls.ts	2.85%	34 Missing ⚠️
app/core/SDKConnect/handlers/checkPermissions.ts	3.33%	29 Missing ⚠️
...core/SDKConnect/handlers/handleBatchRpcResponse.ts	3.57%	27 Missing ⚠️
app/core/SDKConnect/Connection.ts	0.00%	25 Missing ⚠️
app/core/SDKConnect/handlers/setupBridge.ts	5.26%	18 Missing ⚠️
... and 5 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7921      +/-   ##
==========================================
- Coverage   37.46%   36.58%   -0.89%     
==========================================
  Files        1052     1082      +30     
  Lines       28202    29053     +851     
  Branches     2517     2653     +136     
==========================================
+ Hits        10566    10628      +62     
- Misses      17037    17827     +790     
+ Partials      599      598       -1     

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[github-actions]

E2E test started on Bitrise: https://app.bitrise.io/app/be69d4368ee7e86d/pipelines/894a5c2d-56b7-41b3-a5e0-d5f884805c26
You can also kick off another Bitrise E2E smoke test by removing and re-applying the (Run Smoke E2E) label

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
14 Code Smells

1.8% Coverage
0.0% Duplication

[andreahaku]

LGTM

[christopherferreira9]

LGTM!
Test cases and run can be found under the SDK documentation as this involved a full regression over the multiple SDKs.

[christopherferreira9]

E2E Regression run: https://app.bitrise.io/app/be69d4368ee7e86d/pipelines/e4c7e9e6-9cc3-4dff-b37a-74b475cdccff