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feat(category_theory/abelian/transfer): adjoint functor transfers "enough-injectiveness"
If $A, B$ are abelian categories and $L\dashv R$ is a pair of adjoint functors, where $L$ is faithful and exact, then enough invectiveness of $B$ implies that of $A$
- [x] depends on: #14581
- [x] depends on: #15262 to fix a timeout.
This PR/issue depends on:
- ~~leanprover-community/mathlib#14581~~
- ~~leanprover-community/mathlib#15262~~ By Dependent Issues (🤖). Happy coding!