Expand the wiki's "File a bug report" section

[wilzbach]

https://wiki.dlang.org/Get_involved#File_a_bug_report

(idea brainstorming for how the wiki page on filing a bug report could be improved)

• [ ] mention run.dlang.io (especially the regression testing)
• [ ] maybe mention har for multiple files
• [ ] maybe make it standalone
• [ ] mention testing with the latest release
• [ ] maybe link to digger for building master or dmd in debug mode for better stack traces
• [ ] add some guidelines for common keywords
  • "ice"
  • "reject-valid"
  • "accepts-invalid"
• [ ] Add pointers on how to draw attention (e.g. #dbugfix)
• [ ] Add pointers on how to dig into the problem for himself (-> link to building DMD + debugging DMD?)
• [ ] Add guide to pick the correct component
• [ ] Add pointers to other "support" option
  • NG, #d, #learn
  • donating to the DLF can get you priority bugs or "consulting" hours)

An good document for inspiration:

https://developer.mozilla.org/en-US/docs/Mozilla/QA/Bug_writing_guidelines

[CyberShadow]

Yep, it should probably be a page of its own.

We should also attempt to balance amount of information vs. not overwhelming first-time reporters.

[CyberShadow]

We should try to move as much of the documentation into the process itself. Ideally, the amount of documentation one needs to read prior to filing a perfect bug report is zero, and the bug filing process will instead guide users into creating good bug reports.