feat(wm): allow direct querying of focused objects

This commit adds a new query command to komorebic, which allows for the
current focused monitor, workspace, container and window indices to be
queried directly without having to use jq run lookups on the entire
output of the state command.

resolve #24

komorebi-core/src/lib.rs

@@ -67,6 +67,7 @@ pub enum SocketMessage {
     ManageRule(ApplicationIdentifier, String),
     IdentifyTrayApplication(ApplicationIdentifier, String),
     State,
+    Query(StateQuery),
     FocusFollowsMouse(bool),
     ToggleFocusFollowsMouse,
 }
@@ -89,6 +90,15 @@ impl FromStr for SocketMessage {
     }
 }
 
+#[derive(Clone, Debug, Serialize, Deserialize, Display, EnumString, ArgEnum)]
+#[strum(serialize_all = "snake_case")]
+pub enum StateQuery {
+    FocusedMonitorIndex,
+    FocusedWorkspaceIndex,
+    FocusedContainerIndex,
+    FocusedWindowIndex,
+}
+
 #[derive(Clone, Debug, Serialize, Deserialize, Display, EnumString, ArgEnum)]
 #[strum(serialize_all = "snake_case")]
 pub enum ApplicationIdentifier {