[lib] Add setConnectionIssueActionType

Summary:
issue: https://linear.app/comm/issue/ENG-5990/add-setconnectionissue-action
This is an action used to set connectionIssue field.

Test Plan: Dispatched the action, checked that the connectionIssue is set in the keyserver store.

Reviewers: michal, ginsu, kamil, tomek

Reviewed By: ginsu

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D10288