* remove unused and update black + precommit
* makefile add ruff remove unused
* F541 fix
* complete ruff ignore
* remove unused workflow and combine linters into one
add lnbits/static to ruff ignore
save preview and linelength for later
define target version for black
* ignore upgrades for mypy
* remove flake8
* ignore F401 for __init__ files
* unused pylint comment
* unused noqa
* ignore upgrades for black
* run linting on py3.9 and py3.10
* dont assume python
* remove invoices
* remove invoices tests
* remove unused tests/extensions dir
* fix issue
* formatting
* test passing locally. and i dont know why
* fix _extension_dir loading
* gitkeep extension dir
* formatting
* remove bundle from check
* do not prettier compliled css
* do not prettier compliled css
* create extension dir, if it does not exists, just to be sure
* Update lnbits/extension_manager.py
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Co-authored-by: calle <93376500+callebtc@users.noreply.github.com>