feat: make FromPrimitive wrappers public

[gdalle]

Make AutoForwardFromPrimitive and AutoReverseFromPrimitive public, as a way to circumvent ForwardDiff's GPU limitations.

Related:

• ForwardDiff scalar indexing with GPU arrays #820
• Add GPU-safe AutoForwardDiff wrapper with AutoForwardFromPrimitive SciML/OrdinaryDiffEq.jl#2788

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.89%. Comparing base (dae09ef) to head (6894ad7).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #825   +/-   ##
=======================================
  Coverage   97.89%   97.89%           
=======================================
  Files         129      129           
  Lines        7751     7757    +6     
=======================================
+ Hits         7588     7594    +6     
  Misses        163      163           

Flag	Coverage Δ
DI	98.74% <100.00%> (+<0.01%)	⬆️
DIT	95.66% <ø> (ø)

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