Gns3-gui

* Add GNS3 console command "env" to show what environment variables are used. Ref https://github.com/GNS3/gns3-server/issues/2306
* Add CTRL+C shortcut to copy status bar message. Ref 3561
* Key modifier (ALT) to ignore snap to grid. Fixes 3538
* Increase timeout to 5s for status bar messages. The coordinates message has no timeout and can be reset when clicking on the scene. Ref 3561
* Add reset GUI state feature. Ref 3549
* Fix for hiding Windows terminal. Ref 3290
* Drop support for Python 3.6
* Upgrade sentry-sdk, psutil and distro dependencies

* Add missing console_type values in appliance_v8.json. Ref https://github.com/GNS3/gns3-registry/issues/849
* Handle moved project notifications on controller stream
* Add debug for PATH env variable
* Add custom executable paths on Windows
* Add --suppressApplicationTitle for Windows terminal. Fixes https://github.com/GNS3/gns3-gui/issues/3544
* Upgrade sentry-sdk and aiohttp

* No changes

* Fix timeout issue when creating Qemu disk image. Fixes https://github.com/GNS3/gns3-server/issues/2313
* Refactor command variables support
* Add vendor_logo_url in appliance schemas. Ref https://github.com/GNS3/gns3-registry/pull/825
* Add Qemu IGB network device
* Add the ability to edit width and height in the style edit dialog.

* Add KiTTY to preconfigured telnet consoles. Fixes 3507
* Fix generic icon in Wayland. Ref 3501
* Support for appliance format version 8.
* Use importlib instead of pkg_resources
* Upgrade to PyQt 5.15.9 and pywin32
* Add support for appliance version 8 format

* Use the system's certificate store for SSL connections
* Give a node some time to start before opening the console (for console auto start). Fixes 3474
* Use Mate Terminal by default if installed on Debian, Ubuntu and Linux Mint.
* Support for gnome-terminal tabs to be opened in the same window.
* Remove import urllib3 and let sentry_sdk import and patch it. Fixes https://github.com/GNS3/gns3-gui/issues/3498
* Add import sys in sudo.py
* Rounded Rectangle support