feat: New json rpc for swaps

[tommasini]

Description

This aims to implement a new JSON RPC method for swaps. This enables dapps to request swaps with metamask mobile wallet.

We can have more information from this MIP.

Screenshots/Recordings

Needs new recordings

Pre-merge author checklist

• I’ve followed MetaMask Coding Standards.
• I've clearly explained:
  • What problem this PR is solving.
  • How this problem was solved.
  • How reviewers can test my changes.
• I’ve indicated what issue this PR is linked to: Fixes #???
• I’ve included tests if applicable.
• I’ve documented any added code.
• I’ve applied the right labels on the PR (see labeling guidelines).
• 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.

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
55.3% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[jiexi]

CAIP related changes look good to me

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
56.2% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[github-actions]

This PR has been automatically marked as stale because it has not had recent activity in the last 90 days. It will be closed in 7 days. Thank you for your contributions.