feat(27254): implement new remote-feature-flag-controller

[DDDDDanica]

Explanation

Following the ADR here

Adds a new controller, remote-feature-flag-controller that fetches the remote feature flags and provide cache solution for consumers.

References

Related to #27254

Changelog

@metamask/remote-feature-flag-controller

ADDED: Initial release

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've highlighted breaking changes using the "BREAKING" category above as appropriate
• I've prepared draft pull requests for clients and consumer packages to resolve any breaking changes

[socket-security]

No dependency changes detected. Learn more about Socket for GitHub ↗︎

👍 No dependency changes detected in pull request

[DDDDDanica]

@metamaskbot publish-preview

[github-actions]

Preview builds have been published. See these instructions for more information about preview builds.

Expand for full list of packages and versions.

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}

[Gudahtt]

LGTM!