It's not my kind of workflow but you can download a graphical client like Neovide, which I think has options for opening directly from your file browser.

I typically have a terminal-heavy workflow so it's very rare that I'm browsing to files from within my desktop, but if I am using Dolphin to look for a file I have a "Open terminal here" shortcut and then I'll usually just run "nvim doc.md".

Why not give it a try? You'll likely find that there's an adjustment period and you can always switch back to your old editor if you don't like it. The beauty of it is that you can build it into whatever IDE you want instead of having useless features shoved into your IDE whether you use them or not.