Add Downgrade CI and update lower package compats

[fhagemann]

The package versions in the Project.toml were a bit of a mess, so I cleaned them up.
To check that the packages still run with the lowest compats, I added the Downgrade CI on 1.10, 1 and pre.

Changes made:

• The use of Unitful.RealOrRealQuantity requires [email protected]
• The use of value(::Quantity) requires [email protected]
• The use of BAT requires some updates listed in Manually set lower bounds on direct deps bat/BAT.jl#466
• The use of LBFGS requires [email protected]
  • [email protected]
    • [email protected]
      • [email protected]
        • Adapt@4
          • [email protected]
          • [email protected]
            • [email protected]
            • [email protected]
            • [email protected]

In addition, I included the bumps of OptimizationOptimJL, OptimizationBBO and OptimizationNLopt from #103, #104 and #105.

[fhagemann]

This should be good to go.
I just wanna note that disentangling this was a freaking mess 😅 but this will probably keep nice and clean now! 😊

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 21.28%. Comparing base (1fb1d15) to head (a5f7cb3).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #111   +/-   ##
=======================================
  Coverage   21.28%   21.28%           
=======================================
  Files          36       36           
  Lines        3312     3312           
=======================================
  Hits          705      705           
  Misses       2607     2607           

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[fhagemann]

This should close #106