Add default issue templates and make the header automation to run on issues from this repo

[MisRob]

Summary

• Adds default issue templates

  • Collected the current main issue templates from our repositories
  • Made minor changes for consistency, for example in template file names

• Adds the default 'not open for contribution' header to all templates

• Makes the issue header automation to run on issues from this repo

References

A companion of learningequality/kolibri-design-system#1037

Reviewer guidance

@marcellamaki feel free to suggest changes via review, or if your draft templates have larger amounts of changes, I welcome you to push directly here.

@rtibbles would you take a peek at the small automation tweak?

[rtibbles]

Might it be more helpful to make a small wrapper action that does the workflow_call from within it, so that this is then an example, and a complete test of how it will be used in other repos?

[MisRob]

Yes, nice idea. Will do as follow-up as we chatted.

[marcellamaki]

From my side in terms of the issue types and basic format this looks fine. I'm not sure if the comment from @rtibbles requires any follow up in terms of the action, or if we'll just do that in follow up

[MisRob]

Thanks @marcellamaki. As for @rtibbles's comment, we agreed on follow-up on Slack.

[MisRob]

@marcellamaki Richard mentioned we can merge after you have a look at templates so if you feel fine about it, let's do so

[marcellamaki]

Discussed with Misha that the comment from Richard will be addressed separatedly