Add apps import command (#4293)

## Summary

Add `databricks apps import` command.

Import an app created in the workspace with a single command

This command combines:

1. bundle init
2. bundle generate app
3. bundle deployment bind
4. bundle deploy
5. bundle run app

The generated `databricks.yml` is minimal and optimized for single app
bundles.




https://github.com/user-attachments/assets/980841d9-e93d-4e0b-92e0-966a45e468ab

---------

Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: fjakobs

cmd/apps/apps.go

@@ -15,5 +15,6 @@ func Commands() []*cobra.Command {
 		newLogsCommand(),
 		newRunLocal(),
 		newValidateCmd(),
+		newImportCommand(),
 	}
 }