Foxtrot and intel squad berets and headband (#4781)

# About the pull request

Adds foxtrot and intel squad berets and hedband transformations to the
list of existing squad variants, helmet/hat decoration sprites included.

# Explain why it's good for the game

More visuals - good, more things work as intended without gaps.

# Testing Photographs and Procedure
<details>
<summary>Screenshots & Videos</summary>


![dreamseeker_2o5SJHq1ku](https://github.com/cmss13-devs/cmss13/assets/100090741/cfec32a2-35ec-4b58-9ff5-36bfb668d6f7)


</details>


# Changelog
:cl:
add: added intel and foxtrot squad berets and headband
/:cl:

code/modules/clothing/head/head.dm

@@ -114,6 +114,12 @@
 				if(SQUAD_MARINE_5)
 					icon_state = "beret_echo"
 					desc = "Tightly Woven, as it should be."
+				if(SQUAD_MARINE_CRYO)
+					icon_state = "beret_foxtrot"
+					desc = "Looks and feels starched, cold to the touch."
+				if(SQUAD_MARINE_INTEL)
+					icon_state = "beret_intel"
+					desc = "Looks more intellegent than the person wearing it."
 		else
 			icon_state = "beret"
 			desc = initial(desc)