feat(c4): improve C4 timer and add type definitions

types/C4.d.ts

@@ -0,0 +1,16 @@
+/**
+ * Event data for C4 use started events.
+ */
+interface C4UseStartedEvent {
+    player: Internal.Player;
+}
+
+/**
+ * Event data for C4 activation events.
+ */
+interface C4ActivatedEvent {
+    level: Internal.Level;
+    player: Internal.Player;
+    explosionTime: number;
+    explosionPower: number;
+}