Add a "sync/adjust namespace" action #2639
Description
Describe the feature you'd like
When you right-click a folder in Solution Explorer, provide a command named "Sync/Adjust Namespace". The command should update the namespaces of all C# files in that folder (including subfolders) so that each file’s namespace matches its relative filesystem path within the project, correcting any mismatches automatically.
Alternatives considered
Currently, there’s an action hint available on individual files, but it must be triggered manually for each file, one at a time. (If someone knows a script to do that on each file automatically, I'm listening)
Environment Information
No response