Adds color to VV (#2903)

## About The Pull Request
Hello dear comrades! I represent to you a more convenient way to change
color of anything through View Variables.

## Why It's Good For The Game
Before you was forced to search or remember colors code to apply it to
light or obj color. And now it's more easy to use. Just like in
character creation.
1. Select VV of anything and go to color

![image](https://github.com/shiptest-ss13/Shiptest/assets/105150564/be9629bc-f9cf-4e8b-90da-8a36fbe8a880)
2. Press C to change type of var

![image](https://github.com/shiptest-ss13/Shiptest/assets/105150564/7ae39847-1e7e-4c72-8932-2d47a36c66ca)
3. Select color

![image](https://github.com/shiptest-ss13/Shiptest/assets/105150564/5bd73fb9-7978-498c-b677-e99da686846d)
4. Apply changes and be happy

![image](https://github.com/shiptest-ss13/Shiptest/assets/105150564/ed5bd567-41a4-4c4e-9130-18d17b00a455)


## Changelog

:cl:
admin: adds color type to variables
/:cl:

code/__DEFINES/vv.dm

@@ -11,6 +11,7 @@
 #define VV_TYPE "Custom Typepath"
 #define VV_FILE "File"
 #define VV_LIST "List"
+#define VV_COLOR "Color"
 #define VV_NEW_ATOM "New Atom"
 #define VV_NEW_DATUM "New Datum"
 #define VV_NEW_TYPE "New Custom Typepath"

code/modules/admin/view_variables/get_variables.dm

@@ -62,6 +62,7 @@
 				VV_DATUM_TYPE,
 				VV_TYPE,
 				VV_FILE,
+				VV_COLOR,
 				VV_NEW_ATOM,
 				VV_NEW_DATUM,
 				VV_NEW_TYPE,
@@ -190,6 +191,12 @@
 				.["class"] = null
 				return
 
+		if(VV_COLOR)
+			.["value"] = input("Pick color:", "Color", current_value) as null|color
+			if(.["value"] == null)
+				.["class"] = null
+				return
+
 		if(VV_ICON)
 			.["value"] = input("Pick icon:", "Icon") as null|icon
 			if(.["value"] == null)