Add Match Rule support

[morremeyer]

Is your feature request related to a problem? Please describe.
The backend supports Match Rules to automatically match transactions to an Account on import.

Match rules set:

• A string to match (supports globbing)
• The account to match to (by ID)
• A priority as uint (lower number means higher priority)

This should be supported on the frontend, too.

Describe the solution you'd like

• Could be part of an extra menu point "Import" in the main menu. This would make it easier to show priorities of rules in respect to each other
• Could be part of the Account detail view 🤔

Describe alternatives you've considered
Open to ideas!