home: tmux: add hyperlinks support

Somewhat unfortunate that those have to be enabled by force, but easy
enough to support.

modules/home/tmux/default.nix

@@ -24,6 +24,8 @@ in
       type = with types; attrsOf (types.submodule {
         options = {
           trueColor = my.mkDisableOption "24-bit (RGB) color support";
+
+          hyperlinks = my.mkDisableOption "hyperlinks through OSC8";
         };
       });
 
@@ -103,6 +105,8 @@ in
 
       # Force 24-bit color for each relevant $TERM
       ${mkFlags "trueColor" "RGB"}
+      # Force OSC8 hyperlinks for each relevant $TERM
+      ${mkFlags "hyperlinks" "hyperlinks"}
     '';
   };
 }