More robust bullet impact sounds (#8325)

Resources/Audio/Weapons/Guns/Hits/licenses.txt

@@ -0,0 +1,16 @@
+Taken from https://github.com/Citadel-Station-13/Citadel-Station-13-RP/tree/cc701aedb633d83eae8339a8b3712ad8ad99cca0/sound licensed under CC BY-SA 3.0. Remixed to mono where it was stereo by metalgearsloth:
+- bullet_meat1.ogg
+- bullet_meat2.ogg
+- bullet_meat3.ogg
+- bullet_meat4.ogg
+- energy_meat1.ogg
+- energy_meat2.ogg
+- energy_metal1.ogg
+- energy_metal2.ogg
+
+Taken from https://github.com/tgstation/tgstation/tree/7501504b0ea029d2cf1c0336d09db5c0959aa412/sound/weapons/effects CC BY-SA 3.0.
+- ric1.ogg
+- ric2.ogg
+- ric3.ogg
+- ric4.ogg
+- ric5.ogg