tools: Make --kccgst xkbcli-compile-keymap option public The new public option `--kccgst` enables to display the result of RMLVO resolution to KcCGST components. This option has the same function than `setxkbmap -print`. This is particularly useful for debugging issues with the rules. Before this commit it was a private API. This commit enables us to remove the *internal* version of `xkbcli-compile-keymap`.