Commit 2023-05-09 09:46 d4ad63cd

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feat: port MeasureTheory.Measure.Sub (#3866)

Estimated changes

Modified Mathlib.lean

Created Mathlib/MeasureTheory/Measure/Sub.lean

added theorem MeasureTheory.Measure.restrict_sub_eq_restrict_sub_restrict

added theorem MeasureTheory.Measure.sub_add_cancel_of_le

added theorem MeasureTheory.Measure.sub_apply

added theorem MeasureTheory.Measure.sub_apply_eq_zero_of_restrict_le_restrict

added theorem MeasureTheory.Measure.sub_def

added theorem MeasureTheory.Measure.sub_eq_zero_of_le

added theorem MeasureTheory.Measure.sub_le

added theorem MeasureTheory.Measure.sub_le_of_le_add

added theorem MeasureTheory.Measure.sub_self

added theorem MeasureTheory.Measure.sub_top

added theorem MeasureTheory.Measure.zero_sub