feat(Bicategory/Functorbicategory): define bicategory of pseudofunctors

[callesonne]

This PR contains a definition of the bicategory of pseudofunctors, in the file Bicategory/FunctorBicategory/Pseudo.lean. It also moves the file Bicategory/Functorbicategory.lean to Bicategory/FunctorBicategory/Oplax.lean.

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• [x] depends on: #14028
• [ ] depends on: #18250
• [ ] depends on: #18252
• [ ] depends on: #18253

[github-actions[bot]]

PR summary 77c1deedba

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference
Mathlib.CategoryTheory.Bicategory.Modification.Pseudo (new file)	359
Mathlib.CategoryTheory.Bicategory.FunctorBicategory.Pseudo (new file)	361

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Declarations diff

+ associator + bicategory + leftUnitor + rightUnitor + whiskerLeft + whiskerRight ++ ModificationIso.ofComponents ++ equivOplax ++ hasCoeToOplax ++ mkOfOplax ++ toOplax ++ whiskerLeft_naturality ++ whiskerRight_naturality +++ homCategory.ext - Modification.comp_app' - Modification.id_app' - ext - id - vcomp -+++ Modification -+++ instance : Inhabited (Modification η η)

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 script/declarations_diff.sh contains some details about this script.

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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).

[leanprover-community-mathlib4-bot]

This PR/issue depends on:

• ~~leanprover-community/mathlib4#14028~~
• ~~leanprover-community/mathlib4#18250~~
• ~~leanprover-community/mathlib4#18252~~
• ~~leanprover-community/mathlib4#18253~~
• leanprover-community/mathlib4#18254 By Dependent Issues (🤖). Happy coding!

[callesonne]

Now that I have added Lax functors, I think this should be rewritten so that Strong natural transformations of Pseudofunctors are not defined to be strong natural tranformations of the underlying oplax functors. I'm not sure when I plan to get around to this.

[leanprover-community-bot-assistant]

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

[leanprover-community-bot-assistant]

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

[mathlib4-merge-conflict-bot]

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