Add frontend feature controller for remote development
MR: Pending <!-- NOTE: For context on MR heading, see: https://handbook.gitlab.com/handbook/engineering/development/dev/create/remote-development/index.html#relationship-of-issues-to-mrs --> ## Description Following up on the thread here, https://gitlab.com/gitlab-org/gitlab/-/merge_requests/187247#note_2455204593, we would like to add back the remove development feature flag controller, when we plan to use it in the future. Pls note this controller solution for feature flag is likely to be temporary solution, pls follow there issues for the more proper solution. - https://gitlab.com/gitlab-org/gitlab/-/issues/522906+s - https://gitlab.com/gitlab-org/gitlab/-/issues/482814+s <!-- TODO: What kind of issue is this? Please uncomment and include one of the following: /label ~"type::feature" /label ~"type::bug" /label ~"type::maintenance" --> <!-- OPTIONAL: Is this a feature/enhancement? - Please describe the impact this feature/enhancement will have on the user experience and/or the product as a whole. - Provide a user story to illustrate the use case for this feature/enhancement. Include examples to help communicate the intended functionality. --> <!-- OPTIONAL: Is this a bug? Please uncomment and include the following: - **Current behavior:** - **Expected behavior:** - **Steps to reproduce:** - **Additional information:** please include VSCode version, browser dev tool logs, etc that might be helpful to debug the issue! --> ## Acceptance criteria - [ ] If we decide to add back this API, then we should revert [changes](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/187247) and also happy Rubocop ## Implementation plan NA <!-- NOTE: Feel free to expand with more sections and headers as needed --> <!-- DO NOT TOUCH BELOW -->
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