devel/py-pyls-black: Use python-lsp-server

Conversion from python-language-server (deprecated) to python-lsp-server by cherry picking from Github[1][2].

No conversion to PEP517, since 2023Q1 does not contain it. This will be done in a follow up commit.

[1] https://github.com/rupert/pyls-black/pull/37
[2] https://github.com/rupert/pyls-black/pull/41

PR: 268342
Reported by: p5B2EA84B3@t-online.de
MFH: 2023Q1