drupal 10 compatability

update ci config

- Uses FileSystem::dirname rather than pathinfo to determine new directory name for moved files. Fixes issue which attempted to erroneously create "public:" or "private:" directories when files were at the root of the "public://" or "private://" schemes.

Catches edge case in which file field "File directory" resolves to an empty string.

Fixes issue causing existing file locations to be moved to location corresponding with file field "File directory" setting.

- Changes filter/field name from "Scheme" to "Storage".
- Filter returns all supported media types.
- Code cleanup in settings form.

Code cleanup.

Adds custom views field and filter for "Scheme".

Initial release.