[docs] Add Optim to list of solvers

[blegat]

Preview https://jump-dev.github.io/JuMP.jl/previews/PR3624

Basic

• Check that the solver is a registered Julia package
• Check that the MOI wrapper is part of the latest release
• Check that the solver supports the long-term support release of Julia
• Check that the solver has a MathOptInterface wrapper
• Check that the tests call MOI.Test.runtests. Some test excludes are
  permissible, but the reason for skipping a particular test should be
  documented.
• Check that the README and/or documentation provides an example of how to
  use the solver with JuMP Update README example to new MOI nonlinear interface JuliaNLSolvers/Optim.jl#1059

Documentation

• Add a new row to the table in docs/src/installation.md

Optional

• Add package metadata to docs/packages.toml

cc @pkofod

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (9e2e263) 98.21% compared to head (5892707) 98.29%.
Report is 31 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3624      +/-   ##
==========================================
+ Coverage   98.21%   98.29%   +0.07%     
==========================================
  Files          43       43              
  Lines        5653     5676      +23     
==========================================
+ Hits         5552     5579      +27     
+ Misses        101       97       -4     

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[odow]

@blegat the issue now is that the Optim README doesn't conform to our needs: https://jump.dev/JuMP.jl/previews/PR3624/packages/Optim/

Perhaps we could just omit the README for now?

[pkofod]

the issue now is that the Optim README doesn't conform to our needs:

where can I find the requirements?

[odow]

It needs to be documenter markdown, not GitHub markdown 😄

You can see from the image above. The links don't work, and it needs to be ```math instead of $$. It can be painful to get right. But I can take a look if you don't mind me making seeming pointless changes to the README just so JuMP can embed the README in our docs.

[pkofod]

It needs to be documenter markdown, not GitHub markdown 😄

You can see from the image above. The links don't work, and it needs to be ```math instead of $$. It can be painful to get right. But I can take a look if you don't mind me making seeming pointless changes to the README just so JuMP can embed the README in our docs.

If you have time! Otherwise I'll try to get to it early next week.

[odow]

See JuliaNLSolvers/Optim.jl#1076

[pkofod]

JuliaRegistries/General#100311

[odow]

https://jump.dev/JuMP.jl/previews/PR3624/packages/Optim/