Enables frozen string for some vestigial files as well as the following: * app/controllers/projects/**/*.rb * app/controllers/sherlock/**/*.rb * app/controllers/snippets/**/*.rb * app/controllers/users/**/*.rb Partially addresses #47424.
Also includes a comment on Ci::Config regarding that's going to be override by EE
- Create ci/lints controller inside project/ - Move js pages to be inside projects/ - Copy view ci/lint view to be inside project folder - Remove ci/lint view and js files Closes #43603