Some work on GCConsole2

[lingomaniac88]

GCConsole2 is the largest TU, so I figure I might as well try to help chip away at it.

I'm not being too aggressive with renaming or retyping members of TGCConsole2 (the J2DPicture casts look suspicious though), but I imagine we can resolve those better once we study how these members are used more thoroughly.

[decomp-dev]

Report for GMSJ01 (a65f5ac - 4f71898)

📈 Matched code: 27.78% (+0.07%, +2640 bytes)

✅ 7 new matches

Unit	Item	Bytes	Before	After
mario/GC2D/GCConsole2	TGCConsole2::startDownLeftBot()	+960	0.41%	100.00%
mario/GC2D/GCConsole2	TGCConsole2::startInsertTimer()	+409	0.97%	100.00%
mario/GC2D/GCConsole2	TGCConsole2::startDisappearTelop()	+324	1.22%	100.00%
mario/GC2D/GCConsole2	TGCConsole2::startAppearCoin()	+313	1.27%	100.00%
mario/GC2D/GCConsole2	TGCConsole2::startDisappearTimer()	+301	1.32%	100.00%
mario/GC2D/GCConsole2	TGCConsole2::resetLife(int)	+261	1.52%	100.00%
mario/GC2D/GCConsole2	TCoord2D::roundf<int>(float) const	+52	0.00%	100.00%

📈 6 improvements in unmatched items

Unit	Item	Bytes	Before	After
mario/GC2D/GCConsole2	TGCConsole2::setTimer(long)	+1080	0.35%	96.12%
mario/GC2D/GCConsole2	TGCConsole2::startDisappearCoin()	+714	0.56%	99.77%
mario/GC2D/GCConsole2	TGCConsole2::startAppearTimer(int, long)	+520	0.76%	99.82%
mario/GC2D/GCConsole2	TGCConsole2::startAppearTelop(bool)	+464	0.85%	99.34%
mario/GC2D/GCConsole2	TGCConsole2::startAppearTank()	+286	1.37%	99.32%
mario/GC2D/GCConsole2	.sdata2	+41	12.77%	36.94%