Move the "creating an issue" section from bugpoint.rst to "reporting bugs" in `contributing.rst`.
Fix link to `CONTRIBUTING.md`.
Update `CONTRIBUTING.md` to refer to the bugpoint guide instead of the stack overflow guide.
More info for creating GitHub issues and the different sections.
Discuss additional details that can be included as comments on the issue. Also mention Gists for large files (preferable to downloading a .txt).
Add a warning about external plugins/tools.
Also add a note to `load_design.rst` about `Frontend`s and `-f` command line option.
Add a note on fuzzers, with a polite suggestion that if you're fuzzing you should put in the work of identifying the underlying issue so that you (and we) are confident you're not raising multiple issues for the same bug.
Also dropping the `autosectionlabel_maxdepth = 1` so that I can actually use the auto section labels.
Adds warning on bash substitution on scripting intro page when talking about `yosys -p`.
