Fire weapons

Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>

lib/features/player/weapons/machine_gun.dart

@@ -0,0 +1,12 @@
+import 'package:wolf_dart/features/player/weapon.dart';
+
+class MachineGun extends Weapon {
+  MachineGun()
+    : super(
+        name: "Machine Gun",
+        idleSprite: 413,
+        fireFrames: [414, 415], // Faster 2-frame loop
+        damage: 20,
+        msPerFrame: 80,
+      );
+}