Add a CANCELLED state for PIREPs

app/Models/Enums/PirepState.php

@@ -9,11 +9,13 @@ class PirepState extends EnumBase {
     const IN_PROGRESS   = 0;
     const PENDING       = 1;
     const ACCEPTED      = 2;
+    const CANCELLED     = 3;
 
     protected static $labels = [
         PirepState::REJECTED        => 'system.pireps.state.rejected',
         PirepState::IN_PROGRESS     => 'system.pireps.state.in_progress',
         PirepState::PENDING         => 'system.pireps.state.pending',
         PirepState::ACCEPTED        => 'system.pireps.state.accepted',
+        PirepState::CANCELLED       => 'system.pireps.state.cancelled',
     ];
 }