Arrow_Ice OK (#314)

* Migrate data and ArrowIce_Init OK

* ArrowIce_Destroy OK (also define func_80115D5C in functions.h, maybe a bad thing???)

* ArrowIce_SetupAction OK

* func_809224DC OK

* ArrowIce_Update OK

* func_809227F4 OK (but with hacky float constant)

* func_809225D0 OK and use float constant in func_809227F4

* func_80922628 OK

* ArrowIce_Draw OK

* Migrate D_80924200.s to C

* Apply better names in ice_gfx, and document Draw slightly

* Name struct vars to match OoT

* Update function names to match OoT

* Explain that arrow's timer and hitFlags came from OoT

* Update spec + "migrate" bss to C

* Do a hex -> decimal conversion I missed

* Remove blank line in-between headers

* Remove extraneous forward declare

* Move initialization of arrow up one line

* Remove parentheses

* Use else if

* Use decrement operation

* Use decimal for an alpha calculation

* Switch func_80115D5C to take GameState*

* Put pad on the top of Draw

* Move initialization of arrow up (again)

* Early return from Update if we're killed

* Extract assets instead of putting them in the repo

* Add explanatory comment to top of file

* += 1 -> ++

* Use VEC3F_LERPIMPDST macro

* Force a jenkins rerun by adding a space

* Remove the space from the last commit

* Move literal to the back of the conditional

* Respond to review feedback

* Add ArrowIce_LerpFiredPosition to functions.txt

include/functions.h

@@ -2162,7 +2162,7 @@ void func_801159c0(s16 param_1);
 void func_801159EC(s16 arg0);
 void func_80115A14(s32 arg0, s16 arg1);
 // void Parameter_AddMagic(void);
-// void func_80115D5C(void);
+void func_80115D5C(GameState* gamestate);
 // void func_80115DB4(void);
 // void func_80116088(void);
 // void func_80116114(void);