chore(CategoryTheory/Limits/HasLimit): use to_dual

[JovanGerb]

This PR uses to_dual to generate stuff about HasColimit from HasLimit.

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[github-actions]

PR summary 6a2451831e

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference

---

Declarations diff (regex)

++ instance (priority := 100) {J : Type u₁} [Category.{v₁} J]
- HasColimit.isoOfNatIso
- HasColimit.mk
- HasColimits
- HasColimits.hasColimitsOfShape
- colimMap
- colimit
- colimit.cocone
- colimit.coconeMorphism
- colimit.coconeMorphism_hom
- colimit.cocone_x
- colimit.cocone_ι
- colimit.comp_coconePointUniqueUpToIso_hom
- colimit.comp_coconePointUniqueUpToIso_inv
- colimit.desc
- colimit.desc_cocone
- colimit.desc_extend
- colimit.existsUnique
- colimit.hom_ext
- colimit.isColimit
- colimit.isColimit_desc
- colimit.isoColimitCocone
- colimit.isoColimitCocone_ι_hom
- colimit.isoColimitCocone_ι_inv
- colimit.map_desc
- colimit.w
- colimit.ι
- colimit.ι_coconeMorphism
- colimit.ι_desc
- getColimitCocone
- hasColimit_iff_of_iso
- instance (priority := 100) hasColimitOfHasColimitsOfShape {J : Type u₁} [Category.{v₁} J]
- instance (priority := 100) hasColimitsOfShapeOfHasColimitsOfSize {J : Type u₁} [Category.{v₁} J]
- instance (priority := 100) hasLimitOfHasLimitsOfShape {J : Type u₁} [Category.{v₁} J]
- instance (priority := 100) hasLimitsOfShapeOfHasLimits {J : Type u₁} [Category.{v₁} J]
- isIso_colimMap
- ι_colimMap

You can run this locally as follows

## from your `mathlib4` directory:
git clone https://github.com/leanprover-community/mathlib-ci.git ../mathlib-ci

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

## more verbose report:
../mathlib-ci/scripts/pr_summary/declarations_diff.sh long <optional_commit>

The doc-module for scripts/pr_summary/declarations_diff.sh in the mathlib-ci repository contains some details about this script.

Declarations diff (Lean)

✅ Lean-aware diff — post-build, computed from the Lean environment (commit 6a24518).

• +5 new declarations
• −5 removed declarations

-CategoryTheory.Limits.HasColimits.hasColimitsOfShape
+CategoryTheory.Limits.HasColimits.has_colimits_of_shape
-CategoryTheory.Limits.hasColimitOfHasColimitsOfShape
-CategoryTheory.Limits.hasColimitsOfShapeOfHasColimitsOfSize
-CategoryTheory.Limits.hasLimitOfHasLimitsOfShape
-CategoryTheory.Limits.hasLimitsOfShapeOfHasLimits
+CategoryTheory.Limits.instHasColimitOfHasColimitsOfShape
+CategoryTheory.Limits.instHasColimitsOfShapeOfHasColimitsOfSize
+CategoryTheory.Limits.instHasLimitOfHasLimitsOfShape
+CategoryTheory.Limits.instHasLimitsOfShapeOfHasLimitsOfSize

---

Decrease in strong tech debt: (relative, absolute) = (3.00, 0.00)

Current number	Change	Type (strong)
7113	-3	backward.isDefEq.respectTransparency

No changes to weak technical debt.

Current commit 6a2451831e
Reference commit d732046e27

This script lives in the mathlib-ci repository. To run it locally, from your mathlib4 directory:

git clone https://github.com/leanprover-community/mathlib-ci.git ../mathlib-ci
../mathlib-ci/scripts/reporting/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).

[mathlib-merge-conflicts]

This pull request has conflicts, please merge master and resolve them.