feat(bonfire): add disconnection mechanism

feat(bonfire): handle session deletion and logout events
feat(core): trigger logout on bot token reset

crates/core/database/src/events/client.rs

@@ -48,6 +48,8 @@ pub enum EventV1 {
 
     /// Successfully authenticated
     Authenticated,
+    /// Logged out
+    Logout,
     /// Basic data to cache
     Ready {
         users: Vec<User>,