Improve `editor::CopyAndTrim` action's discoverability (#27484)

Follow-up of https://github.com/zed-industries/zed/pull/27206

Add it to the editor context menu and Zed's app menu near the `Copy`
action.

Release Notes:

- N/A
7462e74fbfKirill Bulatov committed on 3/26/2025, 10:28:32 AM· committed by GitHubparentde67d93
2 files changedLine totals unavailable