* Tests: Fix InputCompletion tests in Qt6
This is achieved by not checking exact order for certain completion tests
* Tests: Use Ubuntu 22.04 for all tests
This allows us to be a bit more loose and use more C++20 features in
tests
* Update dockerfiles
* delet chatterino.pro
* Update documentation
* Update Github Actions config
* Update Cirrus CI config
* Attempt to fix Cirrus CI
* Add changelog entry
* Delete tools/update_filelist.py
It was a QMake-only script? Maybe will need revert + change to CMake or something?
* fix?
* Fuck this linter
* Attempt to clean up build.yml a little
* Add cmaake to install list, remove step for qmake PATH
* Change list entries to always use 1.
Sneaky unrelated change
* These are no longer tests!
* FUCK YOU PRETTIER
* Make BUILDING_ON_LINUX.md simpler
* Get rid of Jenkins
* Get rid of travis
* Remove dupes
* Remove appveyor
* Remove qmake from conanfile
* Try removing explicit qmake path
* Nothing uses the qt style plugins installer anymore
* Update manual linux building instructions
* Update freebsd compilation instructions with a copy paste from the linux instructions
* Remove unused docker files
* Remove linux breakpad build script as it's unused
* Update changelog entry phrasing
* Lint build markdown files
* Change top changelog entry to not be confused as a link
* Skip QtCreator conan setup if conan is disabled
This reduces the amount of warnings & errors Windows users get with
QtCreator
* lint building on linux file
Co-authored-by: Rasmus Karlsson <rasmus.karlsson@pajlada.com>