feat(LocalExtr/LineDeriv): new file

[urkud]

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[github-actions[bot]]

PR summary 5150050431

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference
Mathlib.Analysis.Calculus.LocalExtr.LineDeriv	1299

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Declarations diff

+ HasLineDerivWithinAt.hasLineDerivAt' + IsExtrFilter.hasLineDerivAt_eq_zero + IsExtrFilter.lineDeriv_eq_zero + IsExtrOn.hasLineDerivAt_eq_zero + IsExtrOn.hasLineDerivWithinAt_eq_zero + IsExtrOn.lineDerivWithin_eq_zero + IsExtrOn.lineDeriv_eq_zero + IsLocalExtr.hasLineDerivAt_eq_zero + IsLocalExtr.lineDeriv_eq_zero + IsLocalMax.hasLineDerivAt_eq_zero + IsLocalMax.lineDeriv_eq_zero + IsLocalMin.hasLineDerivAt_eq_zero + IsLocalMin.lineDeriv_eq_zero + IsMaxOn.hasLineDerivAt_eq_zero + IsMaxOn.hasLineDerivWithinAt_eq_zero + IsMaxOn.lineDerivWithin_eq_zero + IsMaxOn.lineDeriv_eq_zero + IsMinOn.hasLineDerivAt_eq_zero + IsMinOn.hasLineDerivWithinAt_eq_zero + IsMinOn.lineDerivWithin_eq_zero + IsMinOn.lineDeriv_eq_zero

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>

[mathlib-bors[bot]]

:v: urkud can now approve this pull request. To approve and merge a pull request, simply reply with bors r+. More detailed instructions are available here.

[leanprover-community-mathlib4-bot]

As this PR is labelled auto-merge-after-CI, we are now sending it to bors:

bors merge

[mathlib-bors[bot]]

Pull request successfully merged into master.

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