remove hardcoded references to nerdvegas gh project where possible

[nerdvegas]

I'm unsure as to whether there are places left we can do this, but it's worth a look before migration to aswf gh org

[nerdvegas]

done in wiki

[nerdvegas]

I think this is done now, the remaining instances only make sense to do after aswf migration:

• issue/pull links in inline comments
• instances in README.md (such as badge links)

[maxnbk]

I've resolved every other nerdvegas repo reference, excluding rez-shotgun which is a legacy repo still residing at nerdvegas, and omitting personal author references in changelogs and so forth.
The only thing remaining is sonarlcloud for which a separate issue exists, so I believe this is closeable. please reopen if you believe there is something else, @nerdvegas .

[cuckon]

Sorry what happened? Any context?