Add IW Engine (SteamDatabase#801)

Co-authored-by: Antoine Rybacki <15911822+Lifeismana@users.noreply.github.com>

Author: diedyesterdaywastaken

descriptions/Engine.IW_Engine.md

@@ -0,0 +1 @@
+The [**IW engine**](https://en.wikipedia.org/wiki/IW_(game_engine)) is a game engine created and developed by Infinity Ward for the Call of Duty series.

rules.ini

@@ -117,6 +117,8 @@ idTech[] = \.texdb$
 idTech[] = \.streamdb$
 Infernal_Engine = (?:^|/)(?:COMMON|STARTUP)\.POD$
 Irrlicht = (?:^|/)Irrlicht\.dll$
+IW_Engine[] = \.iwd$
+IW_Engine[] = (?:common(?:_zm|_mp)?|code_post_gfx)\.ff$
 Kex = \.kpf$
 KiriKiri = (?:^|/)data\.xp3$
 KMY = (?:^|/)kmyCore\.dll$

tests/types/Engine.IW_Engine.txt

@@ -0,0 +1,12 @@
+.iwd
+/common.ff
+/iw_00.iwd
+code_post_gfx.ff
+common.ff
+common_mp.ff
+common_zm.ff
+iw_00.iwd
+main/iw_00.iwd
+worldwide/ww_code_post_gfx.ff
+zone/all/common_mp.ff
+zone/all/common_zm.ff

tests/types/_NonMatchingTests.txt

@@ -338,6 +338,20 @@ libpanda
 panda.dll
 libanda.dll
 libpanda_dll
+ode_post_gfx.ff
+ommon.ff
+ommon_zm.ff
+iw_00.wd
+code_post_gfx_ff
+common_ff
+common_zm_ff
+iw_00_iwd
+code_post_gfx.f
+common.f
+common_zm.f
+iw_00.iw
+commonzm.ff
+common_m.ff
 .xemtest
 bytecode.by
 ytecode.byc
@@ -942,6 +956,9 @@ project.godotfork
 Squall_dll
 Squall.dl
 quall.dll
+.iwdd
+.fff
+.xpakk
 fgame.unx
 fgame.ios
 flibYoYoGamepad.dylib