PR - Gender Update (#14406)

* PR - Gender Update

Gives Gender three states instead of two. This allows clones of tri-gendered species to properly carry their genders over to new bodies (e.g. Greys, Drask, etc.).

Tristate Gender Set Proc
Tristate Gender Get Proc
Fixes where Binary State was needed.

* Update update_icons.dm

Yeah, let's _not_ have Genderless folks get inconsistently gendered body part sprites (e.g. head, groin, torso mismatch).

* Update dna2.dm

* Update dna2.dm

* Update organ_icon.dm

* Update update_icons.dm

* Update dna2_helpers.dm

* Update organ_icon.dm

Readability (spacing)

* Update dna_injector.dm

* Update dna2.dm

* Changes made per Affected's requests.

Changes made per Affected's feedback.

* Update dna2.dm

Got our heads too deep in using this just for DNA_UI_GENDERr - returning the Set and Get procs to 0, 1, 2 as per Affected's request.

While in there, noticed some housekeeping items:
- reorganized the ranges so they flow numerically now
- changed the ranges so they don't overlap (line 205 having been the worst)
- removed the "else" statement from line 222 since we're using ASSERTS. There shouldn't be a value outside the range of 0 to 2 for this.

code/__DEFINES/dna.dm

@@ -55,3 +55,8 @@
 #define DNA_UI_LENGTH		38 // Update this when you add something, or you WILL break shit.
 
 #define DNA_SE_LENGTH 55 // Was STRUCDNASIZE, size 27. 15 new blocks added = 42, plus room to grow.
+
+//Trinary State Values for DNA_UI_GENDER
+#define DNA_GENDER_FEMALE	0
+#define DNA_GENDER_MALE		1
+#define DNA_GENDER_PLURAL	2