Use a different terminal and/or editor. Mouse support is absolutely a common feature and has been for a while. xterm, konsole, tmux, emacs, GNU screen, etc., etc. all let you do a variety of things with the mouse.

For instance I use helix and can move the cursor with the mouse just fine in WezTerm, iTerm, and Apple's Terminal.app. tmux has a mouse mode where you can select and scroll with the mouse.