[FEATURE REQUEST] Allow adding arbitrary metadata to cards in wallet

[je-sendra]

Is your feature request related to a problem? Please describe.
I would like to add arbitrary key-pair values to a card's metadata. For example, I may want to add "Expiration date" and its value.

Describe the solution you'd like
Add a dictionary with key-pair values to the card and display them on screen.

Describe alternatives you've considered
A single textarea related to the card to add all the information we want there as plaintext.

Additional context
Not needed.

[farfromrefug]

@je-sendra great idea. Will look at it

[farfromrefug]

@je-sendra it has been implemented in latest release!