buff cm5 (#3922)

## About The Pull Request

>Well-liked for its accuracy, stability, and ease of use compared to
other submachineguns
>statline is the same as every other smg


## Changelog

:cl:

balance: CM5 now lives up to its description
/:cl:

code/modules/projectiles/guns/manufacturer/clip_lanchester/ballistics.dm

@@ -174,6 +174,9 @@ NO_MAG_GUN_HELPER(automatic/pistol/cm357)
 	fire_sound = 'sound/weapons/gun/smg/cm5.ogg'
 	manufacturer = MANUFACTURER_MINUTEMAN
 
+	spread = 3
+	spread_unwielded = 7
+
 	valid_attachments = CLIP_ATTACHMENTS
 	slot_available = list(
 		ATTACHMENT_SLOT_MUZZLE = 1,