Mss

- fixed the wheel package

- added support for Python 3.11
- added support for Python 3.10
- removed support for Python 3.5
- MSS: modernized the code base (types, `f-string`, ran `isort` & `black`) (closes 101)
- MSS: fixed several Sourcery issues
- MSS: fixed typos here, and there
- doc: fixed an error when building the documentation

darwin.py
- Added `CFUNCTIONS`

linux.py
- Added `CFUNCTIONS`

windows.py
- Added `CFUNCTIONS`
- Added `MONITORNUMPROC`
- Removed `MSS.monitorenumproc`. Use `MONITORNUMPROC` instead.

base.py
- Added `lock`
- Added `MSS._grab_impl()` (abstract method)
- Added `MSS._monitors_impl()` (abstract method)
- `MSS.grab()` is no more an abstract method
- `MSS.monitors` is no more an abstract property

darwin.py
- Renamed `MSS.grab()` to `MSS._grab_impl()`
- Renamed `MSS.monitors` to `MSS._monitors_impl()`

linux.py
- Added `MSS.has_extension()`
- Removed `MSS.display`
- Renamed `MSS.grab()` to `MSS._grab_impl()`
- Renamed `MSS.monitors` to `MSS._monitors_impl()`

windows.py
- Removed `MSS._lock`
- Renamed `MSS.srcdc_dict` to `MSS._srcdc_dict`
- Renamed `MSS.grab()` to `MSS._grab_impl()`
- Renamed `MSS.monitors` to `MSS._monitors_impl()`

base.py
- Renamed back `MSSMixin` class to `MSSBase`
- `MSSBase` is now derived from `abc.ABCMeta`
- `MSSBase.monitor` is now an abstract property
- `MSSBase.grab()` is now an abstract method

windows.py
- Replaced `MSS.srcdc` with `MSS.srcdc_dict`

darwin.py
- Added `MSS.__slots__`

linux.py
- Added `MSS.__slots__`
- Deleted `MSS.close()`
- Deleted `LAST_ERROR` constant. Use `ERROR` namespace instead, specially the `ERROR.details` attribute.

models.py
- Added `Monitor`
- Added `Monitors`
- Added `Pixel`
- Added `Pixels`
- Added `Pos`
- Added `Size`

screenshot.py
- Added `ScreenShot.__slots__`
- Removed `Pos`. Use `models.Pos` instead.
- Removed `Size`. Use `models.Size` instead.

windows.py
- Added `MSS.__slots__`
- Deleted `MSS.close()`