Updated submodules to 4.5.5 release

Changed a path to config-X.py file after python limited API support, optimized workflows

Changed a path to config-X.py file after python limited API support, optimized uploading and downloading artifacts

Added python limited API support

Delete appveyor.yml

Use PEP-508 compliant dependency specifiers

The last run was a year ago.  https://ci.appveyor.com/project/skvark/opencv-python/history

Added lines for a proper work using pylint and an autocomplete in IDE

Fixed a build from the source

Moving to auditwheel 5.0.0

Fix typos

Updated opencv submodule for a tag and the description

This allows correctly resolving the numpy version requirement via PyPI metadata, using the same metadata regardless of what version of Python the package was built with or which wheel is uploaded to PyPI first.

Fix typo in Readme

"Programming Language :: Python :: 3.10",

Updated submodules to the release 4.5.4 and added python loader support

Travis CI seems to be on vacation

Updated Github Actions to python 3.10 and fixed following issues

Fixes a typo in Readme

https://travis-ci.org/github/opencv