feat: implement fullstate on-connect event

lib/main.rs

@@ -1,3 +1,5 @@
+use std::collections::HashMap;
+
 use serde::{Deserialize, Serialize};
 
 #[derive(Serialize, Deserialize, Debug)]
@@ -19,4 +21,12 @@ pub enum TagEvent {
     TagUrgent(u8),
     TagEnabled(u8),
     TagDisabled(u8),
+    TagFullState(HashMap<u8, TagState>),
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct TagState {
+    pub enabled: bool,
+    pub occupied: bool,
+    pub urgent: bool,
 }