Allow custom values for the "Clear time" of an user status

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Feature request

Which Nextcloud Version are you currently using: 34.0.1 RC2

Is your feature request related to a problem? Please describe.
When I'm doing a break, I usually set a custom status via talk together with a "Clear after" duration. Depending on the length of the break, the values possible there are sometimes too long (like when I want something between 1 hour and 4 hours) and I choose the bigger value to ensure the message is still there, even when I'm on a break for longer then expected.

That leads to the issue, that I sometimes realize my custom status is still set, although I'm already back from my break for over an hour.

Describe the solution you'd like
It would be great to input a custom duration for a user status (like 90 minutes). If it's additionally possible to set a specific time to expire (like 3:15pm), it would save my mind from some time-span calculations as well. 😄

Describe alternatives you've considered
Probably should get myself into resetting it manually whenever I come back... But sometimes the first messages are being read after returning to desk and I simply forget to do that.

Start by locating the Nextcloud Talk user-status controls and the existing "Clear after" duration options. Read how status expiry is represented and handled, then determine whether custom durations and a specific expiration time fit the current flow. Done means users can set either requested form of custom expiry and the status clears at the selected time.