feat: support contexts with symbolic backends

[gdalle]

• Support Constant and Cache contexts with AutoSymbolics and AutoFastDifferentiation
• Use multi-argument function generation whenever possible
• Add relevant tests (jacobian fails for AutoSymbolics with Cache, will investigate)
• Update the documentation (table of context support, warnings that they usually have to be numbers or arrays)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.74%. Comparing base (43a6e47) to head (4d3ae60).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #703   +/-   ##
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  Coverage   97.74%   97.74%           
=======================================
  Files         119      119           
  Lines        6110     6125   +15     
=======================================
+ Hits         5972     5987   +15     
  Misses        138      138           

Flag	Coverage Δ
DI	98.81% <100.00%> (+<0.01%)	⬆️
DIT	95.39% <ø> (ø)

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