Improvement: Define Issue templates for every issue type

[FScholPer]

What

• To come to to point that we use the same templates in every repository we have to define a central set in the module template repository
• It should also respect PIs, Feature Request, Platform Requests, Feature Modification Request, Epics, Milestones and everything I forgot

How

part of the module repo and synchronisation

Estimates for realization

1 week

Category

• Affects Detailed Design

Requirements / Architecture

• Requirements / Architecture are not affected by this change?

[FScholPer]

Also see eclipse-score/score#2363