Lex annotation namespaces

[ShortDevelopment]

According to the OpenQASM 3 grammar the annotation keyword does support namespaces by chaining Identifiers using the . symbol.
https://github.com/openqasm/openqasm/blob/12de90c301500bd01b9f65bdcbbf4a5ec5c2fec9/source/grammar/qasm3Lexer.g4#L42

But the regex in the pygments lexer does not allow this.

openqasm-pygments/src/openqasm_pygments/qasm3.py

Line 78 in 734ccf7

(r"^[ \t]*@\w+", token.Name.Decorator, "annotation"),

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Fixes #2

[CLAassistant]

All committers have signed the CLA.

[jakelishman]

Cool, thanks! Are you ok adding a release note? If you pip install reno, then it's reno new --edit lex-namespace-annotations and you can write a sentence under "features" (and delete the rest). No worries if not - I can do it.

[ShortDevelopment]

Sure, I added a new entry under "fixes" but I can change that if you want.

Currently ci fails because it cannot find python 3.7?

[jakelishman]

oh boy wow, I have not taken care of this repo haha. I guess let me bring the CI up to present day and then I'll merge this - thanks for the changes!

[jakelishman]

You've got the "allow pushes from maintainers" unchecked (I think?) so I can't push a merge commit to your branch, but if you either rebase over or merge up main, I think this should pass and I can merge it now.

[ShortDevelopment]

Sry I actually don't even have this checkmark...
(Maybe that's cause I forked into an org I don't control)

[jakelishman]

yeah, that'd be it - you have to have enough permissions to grant people write access to your repo.

Thanks for the quick changes - I'll merge this, make sure the switch, case and default keywords lex (pretty sure those were added since the last time I updated this package), and then cut a new release.