d_a_cow Equivalent (#2353)

* decompile d_a_cow

* rescope enums to daCow_c class

* apply suggestions by TakaRikka

* fix JUT_ASSERT

include/d/d_timer.h

@@ -11,6 +11,7 @@ class JKRExpHeap;
 s32 dTimer_createStockTimer();
 s32 dTimer_createTimer(s32 i_mode, u32 i_limitMs, u8 i_type, u8 param_3, f32 param_4, f32 param_5,
                        f32 param_6, f32 param_7);
+u32 dTimer_createGetIn2D(s32 param_0, cXyz i_pos);
 int dTimer_getRestTimeMs();
 u8 dTimer_isStart();
 u8 dTimer_isReadyFlag();