treewide: allow re-running test code and simplify testbeds#1662

trueNAHO wants to merge 9 commits intonix-community:masternix-community/stylix:masterfrom

trueNAHO:treewide-optionally-apply-lib-get-exe-to-stylix-testbed-ui-command-texttrueNAHO/stylix:treewide-optionally-apply-lib-get-exe-to-stylix-testbed-ui-command-textCopy head branch name to clipboard