The vault commands weren't consistent and had weird quirks. This makes the commands consistent while providing better defaults and improved usability. Changes:

• -f (--file) replaces the existing --files flag is now supported on all 4 commands. The old --files was a comma separated string while the new -f can be used multiple times and will autocomplete files
• -f cannot be combined with a position ENVIRONMENT option on any command since it was confusing and inconsistent
• vault view and vault edit no longer require an argument. They will default to showing a select input UI to choose from a vault file.

• vault encrypt and vault decrypt no longer require an argument. Both will default to all vault files.

Closes #356