feat: add support for *_WS and S_*/E_* graphics

[elf-alchemist]

From NyanDoom's spec on non-replacing widescreen and animated graphics. I'm interested in seeing this feature become more widely used, both in ports and WADs alike.

Currently the limitations present in NyanDoom's implementation are the following, perhaps they can be rectified here?

• it does not have support for animated PFUB* scrolling
• S_* start anim lumps having to be place before E_* end anim lumps on the WAD index

Doom Patches

Original	Widescreen
STBAR	STBAR_WS
TITLEPIC	TITLE_WS
INTERPIC	INTER_WS
CREDIT	CREDI_WS
HELP	HELP_WS
HELP1	HELP1_WS
HELP2	HELP2_WS
BOSSBACK	BOSSB_WS
WIMAP0	WIMAP0WS
WIMAP1	WIMAP1WS
WIMAP2	WIMAP2WS
VICTORY2	VICTO_WS
PFUB1	PFUB1_WS
PFUB2	PFUB2_WS
ENDPIC	ENDPI_WS

Boom Patches

Original	Widescreen
HELP01	HELP01WS
HELP02	HELP02WS
...	...
HELP99	HELP99WS

Animated Doom Patches

Original	Start	End
M_DOOM	S_DOOM	E_DOOM
M_SKULL1/2	S_SKULL	E_SKULL
STBAR	S_STBAR	E_STBAR
STARMS	S_STARMS	E_STARMS
TITLEPIC	S_TITLEP	E_TITLEP
INTERPIC	S_INTERP	E_INTERP
CREDIT	S_CREDIT	E_CREDIT
HELP	S_HELP	E_HELP
HELP1	S_HELP1	E_HELP1
HELP2	S_HELP2	E_HELP2
BOSSBACK	S_BOSSBA	E_BOSSBA
WIMAP0	S_WIMAP0	E_WIMAP0
WIMAP1	S_WIMAP1	E_WIMAP1
WIMAP2	S_WIMAP2	E_WIMAP2
VICTORY2	S_VICTOR	E_VICTOR
ENDPIC	S_ENDPIC	E_ENDPIC

Animated Boom Patches

Original	Start	End
HELP01	S_HELP01	E_HELP01
HELP02	S_HELP02	E_HELP02
...	...	...
HELP99	S_HELP99	E_HELP99