feat(CategoryTheory/Abelian): the localization w.r.t. a Serre class is abelian

[joelriou]

---

[github-actions]

PR summary c71e03699b

Import changes exceeding 2%

%	File
+3.47%	Mathlib.CategoryTheory.Abelian.SerreClass.Localization

Import changes for modified files

Dependency changes

File	Base Count	Head Count	Change
Mathlib.CategoryTheory.Abelian.SerreClass.Localization	836	865	+29 (+3.47%)

Import changes for all files

Files	Import difference
Mathlib.CategoryTheory.Abelian.SerreClass.Localization	29

---

Declarations diff

+ abelian
+ epi_iff
+ epi_map_iff
+ hasBinaryProducts
+ hasCoequalizers
+ hasCokernels
+ hasEqualizers
+ hasFiniteProducts
+ hasKernels
+ inverseImage_epimorphisms
+ inverseImage_monomorphisms
+ isNormalEpiCategory
+ isNormalMonoCategory
+ mono_iff
+ mono_map_iff
+ preservesCokernel
+ preservesEpimorphisms
+ preservesKernel
+ preservesMonomorphisms

You can run this locally as follows

## summary with just the declaration names:
./scripts/declarations_diff.sh <optional_commit>

## more verbose report:
./scripts/declarations_diff.sh long <optional_commit>

The doc-module for scripts/declarations_diff.sh contains some details about this script.

---

No changes to technical debt.

You can run this locally as

./scripts/technical-debt-metrics.sh pr_summary

• The relative value is the weighted sum of the differences with weight given by the inverse of the current value of the statistic.
• The absolute value is the relative value divided by the total sum of the inverses of the current values (i.e. the weighted average of the differences).