Trigger for github actions to be run with workflow_dispatch

[DamonU2]

After a change is pushed to an action, it has to be run before the "Run workflow" button from workflow_dispatch is enabled. Actions expected to be run mainly this way need a trigger to start the initial run.

[DamonU2]

@anthonyfok @jvanulde My best idea for this is to create a branch that is solely for triggering the action, and adding on: push: branches [trigger] to the workflow_dispatch actions. Whenever an update is made to the action, a small change can be pushed to that branch, enabling the workflow_dispatch. Thoughts?