Get Contents of Folder Shortcuts action iOS

### Please agree to the following

- [X] I have searched [existing issues](https://github.com/cryptomator/cryptomator/issues?q=) for duplicates
- [X] I agree to follow this project's [Code of Conduct](https://github.com/cryptomator/cryptomator/blob/develop/.github/CODE_OF_CONDUCT.md)

### Summary

Seeking either a Cryptomator action or the ability to use the native Shortcuts action to get the contents of a folder

### Motivation

Goal is to access the files within the vault upon unlock. Using a Get Contents of Folder would present the native files app in a view within the Shortcuts app, prompt for vault unlock if currently locked and grant the ability to access the files within the vault. After performing actions on the files, the next action could be to lock the vault back. All in all, this would allow access and interaction of the Vault all within the shortcuts app without the need to bounce into the Files app, copy the files to an unencrypted folder, performs shortcuts actions and then copy it back to the vault. Using iCloud Drive as the service.

### Considered Alternatives

Currently the native File action in Shortcuts achieves the idea I am seeking. See the attached video where if I use the File action, I can access the Cryptomator vault and it prompts for unlock and then the file system is accessible. If I use any other actions like Get Contents of Folder, Cryptomator isn’t accessible as it’s greyed out.

### Anything else?

https://user-images.githubusercontent.com/40253654/217853569-cb72eed4-5b3f-4aa8-a0a0-c1dec0ffe0dc.MOV