Isolate the itertools extension module #101277

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Followinghttps://github.com/ericsnowcurrently/multi-core-python/wiki/0-The-Plan we need to convert theitertools extension module to use module state.

There are multiple static global type objects:

Lines 338 to 359 ine244401

	Modules/itertoolsmodule.c-_grouper_type-
	Modules/itertoolsmodule.c-accumulate_type-
	Modules/itertoolsmodule.c-batched_type-
	Modules/itertoolsmodule.c-chain_type-
	Modules/itertoolsmodule.c-combinations_type-
	Modules/itertoolsmodule.c-compress_type-
	Modules/itertoolsmodule.c-count_type-
	Modules/itertoolsmodule.c-cwr_type-
	Modules/itertoolsmodule.c-cycle_type-
	Modules/itertoolsmodule.c-dropwhile_type-
	Modules/itertoolsmodule.c-filterfalse_type-
	Modules/itertoolsmodule.c-groupby_type-
	Modules/itertoolsmodule.c-islice_type-
	Modules/itertoolsmodule.c-pairwise_type-
	Modules/itertoolsmodule.c-permutations_type-
	Modules/itertoolsmodule.c-product_type-
	Modules/itertoolsmodule.c-repeat_type-
	Modules/itertoolsmodule.c-starmap_type-
	Modules/itertoolsmodule.c-takewhile_type-
	Modules/itertoolsmodule.c-tee_type-
	Modules/itertoolsmodule.c-teedataobject_type-
	Modules/itertoolsmodule.c-ziplongest_type-

We need to convert these to heap types, add module state, and implement multi-phase init.