[OGUI-1894] Add option to stop ongoing workflows if new commit and add Isaac as default reviewer

[graduta]

I have a JIRA ticket

• branch and/or PR name(s) include(s) JIRA ID
• [N/A] issue has "Fix version" assigned
• issue "Status" is set to "In review"
• PR labels are selected

Notable changes for users:

• N/A

Notable changes for developers:

• if a new commit is pushed to a branch that has ongoing GH actions, these actions will be stopped in favour of the newly triggered ones
• added @isaachilly as default code reviewer

Changes made to the database:

• N/A

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 45.95%. Comparing base (ca5d12b) to head (7e43df0).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2158   +/-   ##
=======================================
  Coverage   45.95%   45.95%           
=======================================
  Files        1036     1036           
  Lines       17155    17155           
  Branches     3118     3118           
=======================================
  Hits         7883     7883           
  Misses       9272     9272           

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