perf: check mutability of array before preallocating dual buffer

[gdalle]

DI source

• Define ismutable_array which returns true by default.

DI extensions

• StaticArrays: overload ismutable_array to return false on SArray
• ForwardDiff: check ismutable_array before preallocating the buffer of Dual numbers in one-argument pushforward

DI tests

• ForwardDiff: Add allocation benchmarks for static scenarios. All allocation-free except hessian and pullback

Chores

• Bump DI to v0.6.23

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.72%. Comparing base (9a524d3) to head (ceeb19c).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #619   +/-   ##
=======================================
  Coverage   97.71%   97.72%           
=======================================
  Files         112      112           
  Lines        5522     5530    +8     
=======================================
+ Hits         5396     5404    +8     
  Misses        126      126           

Flag	Coverage Δ
DI	98.95% <100.00%> (+<0.01%)	⬆️
DIT	95.35% <ø> (ø)

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