Ability for users to change the life time of the UCAN

[icidasset]

By showing a clock and calendar widget/modal.

[bmann]

Adding this screenshot from how Discourse handles this. Set times are easier than an entire clock / calendar modal.

[icidasset]

Oh ya, that's way better. Might not even need the calendar then. Unless people need to have fine-grained control over this, which I doubt is the case 🤔