c++: Rename new -flang-note-module-read option [PR 99166]

c++: Rename new -flang-note-module-read option [PR 99166]

I realized that the just-added flang-note-module-read option should
also cover module writes, and was therefore misnamed.  This addresses
that, replacing it with a -flang-note-module-cmi pair of options.  As
this was such a recent addition, I didn't leave the old option
available.

	PR c++/99166
	gcc/c-family/
	* c.opt (-flang-info-module-cmi): Renamed option.
	gcc/
	* doc/invoke.texi (flang-info-module-cmi): Renamed option.
	gcc/cp/
	* module.cc (module_state::inform_cmi_p): Renamed field.
	(module_state::do_import): Adjust.
	(init_modules, finish_module_processing): Likewise.
	(handle_module_option): Likewise.
	gcc/testsuite/
	* g++.dg/modules/pr99166_a.X: Adjust.
	* g++.dg/modules/pr99166_b.C: Adjust.
	* g++.dg/modules/pr99166_c.C: Adjust.
	* g++.dg/modules/pr99166_d.C: Adjust.