feat: restrict permissions for users in timeout

crates/quark/src/impl/generic/servers/server_member.rs

@@ -1,3 +1,5 @@
+use iso8601_timestamp::Timestamp;
+
 use crate::{
     events::client::EventV1,
     models::{
@@ -48,6 +50,15 @@ impl Member {
         value
     }
 
+    /// Check whether this member is in timeout
+    pub fn in_timeout(&self) -> bool {
+        if let Some(timeout) = self.timeout {
+            *timeout > *Timestamp::now_utc()
+        } else {
+            false
+        }
+    }
+
     pub fn remove(&mut self, field: &FieldsMember) {
         match field {
             FieldsMember::Avatar => self.avatar = None,