4602: Add boolean literal semantic token type to package.json r=matklad a=lnicola
Closes#4583.
CC @GrayJack
4603: Add self keyword semantic token type r=matklad a=lnicola
Not sure if this is warranted a new token type or just a modifier.
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CC #4583, @GrayJack
Co-authored-by: Laurențiu Nicola <lnicola@dend.ro>