* 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
a big refactor that:
- fixes some issues that might have happened (or not) with asynchronous
reactions to payments;
- paves the way to https://github.com/lnbits/lnbits/issues/121;
- uses more async/await notation which just looks nice; and
- makes it simple(r?) for one extension to modify stuff from other extensions.
- extensions are now blueprints: keep views, templastes and statics in the same folder
- increase app security using `flask-talisman`
- whenever possible use {{ url_for }} for links between pages
- remove references to non-existing JavaScript code
- add missing favicon.ico
