feat: more nested AD rules

[avik-pal]

fixes #1150

• logsoftmax & softmax
  • Impl
  • Tests
• MaxPool & MeanPool
  • Impl
  • Tests

[github-actions]

Benchmark Results (ASV)

	main	4dc08d1...	main/4dc08d1eed50bf...
basics/overhead	0.129 ± 0.0015 μs	0.132 ± 0.0012 μs	0.979
time_to_load	0.89 ± 0.0094 s	0.89 ± 0.0068 s	1

Benchmark Plots

A plot of the benchmark results have been uploaded as an artifact to the workflow run for this PR.
Go to "Actions"->"Benchmark a pull request"->[the most recent run]->"Artifacts" (at the bottom).