[Merged by Bors] - feat(data/dfinsupp): copy map_range defs from finsupp #7293
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This adds the bundled homs: * `dfinsupp.map_range.add_monoid_hom` * `dfinsupp.map_range.add_equiv` * `dfinsupp.map_range.linear_map` * `dfinsupp.map_range.linear_equiv` and lemmas * `dfinsupp.map_range_zero` * `dfinsupp.map_range_add` * `dfinsupp.map_range_smul` For which we already have identical lemmas for `finsupp`. Split from #7217, since `map_range.add_equiv` can be used in conjunction with `submonoid.mrange_restrict`
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This adds the bundled homs:
dfinsupp.map_range.add_monoid_homdfinsupp.map_range.add_equivdfinsupp.map_range.linear_mapdfinsupp.map_range.linear_equivand lemmas
dfinsupp.map_range_zerodfinsupp.map_range_adddfinsupp.map_range_smulFor which we already have identical lemmas for
finsupp.Split from #7217, since
map_range.add_equivcan be used in conjunction withsubmonoid.mrange_restrict