fix(wm): unset all duplicate monitor serial ids

This commit fixes a rare issue, seen exclusively with Acer monitors so
far, where two monitors of the same model can have an identical serial
number id.

If we encounter a system which has two connected monitors with the same
serial id number, the serial id number will be forcefully unset and
blacklisted for the rest of the session.

In this case, users must fall back to using device_id for options like
display_index_preferences.

Possibly a little overkill, but since this has been such a headache I'm
going to opt for this approach over #1368 for now.

komorebi/src/lib.rs

@@ -173,6 +173,8 @@ lazy_static! {
             matching_strategy: Option::from(MatchingStrategy::Equals),
         }),
     ]));
+    static ref DUPLICATE_MONITOR_SERIAL_IDS: Arc<RwLock<Vec<String>>> =
+        Arc::new(RwLock::new(Vec::new()));
     static ref SUBSCRIPTION_PIPES: Arc<Mutex<HashMap<String, File>>> =
         Arc::new(Mutex::new(HashMap::new()));
     pub static ref SUBSCRIPTION_SOCKETS: Arc<Mutex<HashMap<String, PathBuf>>> =