It will be nice to have a page where we could edit the configuration files thought the Web Interface.
Are you talking about editing the raw text files? (the whole point of the LuCI interface is to have a way to edit the configuration files, but obviously this is with a GUI rather than raw text edits).
Two ways of doing this already exist (via the linux CLI piped up through the LuCI interface):
And it has been discussed in the past... the general consensus is to use an app on your computer (winscp, other methods) to transfer and edit the files).
See related https://github.com/openwrt/luci/pull/6553
I think it will be nice if there was a webui file editor as example like the one on Frigate nvr.
to edit config files on the fly on the ui