Add command to delete list of notifications by id

[kgilmer]

I am working on a new front end that allows to bulk-delete notifications and am getting socket connect races when deleting each individually. Adding this command allows me to delete all with one socket connect.

Testing done

• run notification w test data of notifications
• connect to server via nc: nc -U /tmp/rofi_notification_daemon
• send `delm:1,2,3' to server
• observe output from dameon listing notifications deleted
• send list to server, check that deleted ids are not returned

[cfsmp3]

LGTM. The only concern I have, not specific about this PR but the daemon in general is that the sock file is hardcoded. Doesn't this cause conflicts with two simultaneous users?

[kgilmer]

LGTM. The only concern I have, not specific about this PR but the daemon in general is that the sock file is hardcoded. Doesn't this cause conflicts with two simultaneous users?

It would, I'm guessing. I don't know how common multi-user desktop computing is in 2021 but what would you suggest? It would need to be something discoverable by client programs...

[cfsmp3]

LGTM. The only concern I have, not specific about this PR but the daemon in general is that the sock file is hardcoded. Doesn't this cause conflicts with two simultaneous users?

It would, I'm guessing. I don't know how common multi-user desktop computing is in 2021 but what would you suggest? It would need to be something discoverable by client programs...

I'd say - just add the UID to the file name.

I'm guessing multi user is uncommon but probably non-zero :-)