Merge tag 'v3.0.0' into develop

Completely modernized portalocker build system and added fully strict pyright and mypy compliance with ruff formatting and checking. Dropped support for deprecated Python versions, only 3.9 and up are supported now. v3.0.0

# -----BEGIN PGP SIGNATURE-----
#
# iQIzBAABCgAdFiEEFJMl/RWQTpxOuJ6V6BRE6c4faV0FAmc7LxgACgkQ6BRE6c4f
# aV2zeA/9H+ecs515q/vW65Ygs9LxuNyDySXW7rsHI7KqjGaQTTi7zth9GzBkFh3J
# 5T6vh7i+nJfjkFxyeWthc93YJZtR9Qfl+O1gtjHtmX/F3y5Wb5YF/x8QDf+rFK4h
# eongRdpwtEnPvitH+SG3qPVzf5MLok5U9grj3F9qD/QFjdHOqYAJ3X6o8ZQYrTOy
# mzuIwMBUzEKthyLhbFzbDjpgZk/Ta7djt6rA3sj1kJQ8icXed6u2eUBmqJz1hYM4
# KD/Rka4ZPIsJyQuntIZpBXcvSZWDkoYbE0/Yq1HG4KqkCYhaEScLt9VAkhzjskOT
# w3lpfY+f+gBIbOHoVFsBBXl3CknuDzu0X9+Ncrj95iPXltDrqhtnkPGg09qa+YoK
# sMGLY1scekyNVTpcoPCuvnUi0hRpO5jLoo2qIySOmpG4qRsDqOgqey7Ocb8OUPeM
# p1ydbcPuQ+tlv3hjfqcSoKwPdCkN+JEsQ+5BG3Kggucg4LoMXJTGa7CA6MWwUHQ8
# UtR4DVzWraK3wKOQgcF8tIMoy1miLPzLEfftO8H+mVFT2y2ikHfBiEb4l55fE/s2
# sXr//jLHsVNDD7p+TkkkOJFUgInSg9vqt9lyQB1IYR/33stmLdOjFQ6soQjIU62c
# X4+R/GyjURYtr7dZ9KzC+V57oLraUtSTXaX6QnBEvCzrjzCwxeg=
# =HjWb
# -----END PGP SIGNATURE-----
# gpg: Signature made Mon Nov 18 13:12:08 2024 CET
# gpg:                using RSA key 149325FD15904E9C4EB89E95E81444E9CE1F695D
# gpg: Good signature from "Rick van Hattem <[email protected]>" [ultimate]
# gpg:                 aka "[jpeg image of size 9662]" [ultimate]