to config wifi-device 'radio0', the wireless menu was gone from Luci. I didn't even have to restart the radio or anything else.
As I understand Luci drops the section because it doesn't understand the parameters in the conf. Is there a module I can install to manage these settings thru Luci or these parameters are not supported at all by Luci, or maybe even LEDE?
So...if your wireless chip is neither Atheros nor Broadcom, that might be the problem.
You would request those be added to the already-existing LuCI application. No extra modules would be needed. But, as I noted, these parameters are not valid for all brands of WiFi chips.
The menu is missing because you introduced syntax errors in your wireless config. Run uci show wireless > /dev/null to see them.
Also note the the parameters you posted are only understood by the long eol madwifi driver. No driver on no current OpenWrt or LEDE version will understand them, they‘ll simply get ignored.