[support-infra] Add reusable issue triage workflow to all repos

[michelengelen]

Summary

In order to normalize the workflows we should add the reusable issue triage workflow from mui-public to all repos.

The original workflow was there for triaging and formatting the issue body when a new issue got opened. In an effort to centralize and normalize that we moved a few workflows to the mui-public repo and made them reusable, so we have 2 benefits:

1. whenever we need to change something in those workflows we only have to do it once
2. we normalize/unify our approach and wording across the public repos

[michelengelen]

Done for ...

• mui-x
• material-ui
• base-ui ([infra] Adds reusable workflow for issue cleanup base-ui#597)
• pigment-css ([infra] Adds reusable workflow for new issue cleanup pigment-css#230)
• mui-toolpad ([code-infra] Replace issue cleanup workflow with centralized one toolpad#4077)