Merge branch 'fw-convenience'

.gitlab-ci.yml

reform2-keyboard-fw/download-fw.sh

reform2-keyboard-fw/flash.sh

reform2-trackball-fw/download-fw.sh

reform2-trackball2-fw/.gitignore

reform2-trackball2-fw/CMakeLists.txt

reform2-trackball2-fw/README.md

reform2-trackball2-fw/build.sh

reform2-trackball2-fw/download-fw.sh

reform2-trackball2-fw/flash.sh

reform2-trackball2-fw/install-picotool.sh

reform2-trackball2-fw/src/main.c

reform2-trackpad-fw/download-fw.sh