Feat #903: Added support for emoji tags

[badsketch]

Resolves #903; This should allow for most emojis to be supported with pure emoji tags, text + emoji tags, and nested emoji tags. I opted for \p{Emoji_Presentation} over \p{Emoji} because (TIL) numbers are emojis and the latter would permit pure number tags #123 through, which we don't want.

This has weird behavior with keycap sequences such as 1️⃣, 9️⃣, as these are encoded as a digit, a variation selector, and enclosing number cap. So currently, a note with #example1️⃣ and a note with #example1 would result in sharing the same tag. I thought maybe this would be an edge case, but in case we do want full support, I can look into adding that, but it would probably mean adding something harder to read to the existing regex like (\u00a9|\u00ae|[\u2000-\u3300]|\ud83d[\ud000-\udfff]).

Also, let me know if the tests are sufficient. I could add an e2e test to tags.test.ts, but wasn't sure since those test more general tag functionality than the type of tags.

Appreciate any feedback!

[riccardoferretti]

Thanks for the amazing work @badsketch

Everything you say makes sense, the test coverage looks good, it looks great!

[riccardoferretti]

Actually can you fix the lint errors? :)

[badsketch]

Sure thing, pushed 👍

[riccardoferretti]

@allcontributors add @badsketch for code

[allcontributors]

@riccardoferretti

I've put up a pull request to add @badsketch! 🎉