delete `read(uint32_t id, void* buf) in imgv2::ImgReader.

Signed-off-by: Shindo Wu <cn.shindo@gmail.com>
add data param to read_func_type in CoveringMapManager
add 'startWith' & 'toLower' to Utils.
fix some bugs & change read method in FakeImgGenerator.
little changes in ImgEntry & ImgReader.
add 'toLower' in 'getExtension' in FileProcesser.
modify EaxWrapper.cpp to adapt above changes.
modify 'read' in CoveringMapManager to adapt GTASA's reading method.
solution to 'lpOverlapped'.
imgGenerators only works once.
Seems basically complete, but annoying problem occurred.

Signed-off-by: Shindo Wu <cn.shindo@gmail.com>