feat(iidx 20-26): New up-/downscaling gfx module, old one doesn't work

This replaces the scaling feature of iidxhook-util/d3d9 as the
game engine changed significantly that the old one is incompatible.

Create a new module because the logic to implement a scaling
feature is very different now. This also avoids further cluttering
the already badly overloaded old module.

The new module is light weight and "plugable" on a hooking
level. Further modules will follow to de-clutter the
iidxhook-util/d3d9 module

src/main/iidxhook-d3d9/Module.mk

@@ -0,0 +1,8 @@
+libs            += iidxhook-d3d9
+
+libs_iidxhook-d3d9     := \
+    util \
+    d3d9-util \
+
+src_iidxhook-d3d9     := \
+    bb-scale-hd.c \