feat(cli): add ffm flag to enable-autostart

The user dumbhighrank mentioned on Discord that it was not possible to
call enable-autostart with the --ffm flag, as one might expect to be
able to do, given that it is accepted by the start command. This commit
introduces the --ffm flag for the enable-autostart command.

komorebic/src/main.rs

@@ -718,6 +718,9 @@ struct EnableAutostart {
     /// Path to a static configuration JSON file
     #[clap(action, short, long)]
     config: String,
+    /// Enable komorebi's custom focus-follows-mouse implementation
+    #[clap(action, short, long = "ffm")]
+    ffm: bool,
     /// Enable autostart of whkd
     #[clap(action, long)]
     whkd: bool,
@@ -1173,6 +1176,10 @@ fn main() -> Result<()> {
 
             let mut arguments = format!("start --config {}", args.config);
 
+            if args.ffm {
+                arguments.push_str(" --ffm");
+            }
+
             if args.whkd {
                 arguments.push_str(" --whkd");
             } else if args.ahk {