Add more extensive usage docs

[sethaxen]

Includes documented Turing, AdvancedHMC, and DynamicHMC integration.

Fixes #13, Relates #10, Supersedes #17

[codecov]

Codecov Report

Merging #63 (78486b7) into main (9ec7e6b) will not change coverage.
The diff coverage is n/a.

❗ Current head 78486b7 differs from pull request most recent head 8004219. Consider uploading reports for the commit 8004219 to get more accurate results

@@           Coverage Diff           @@
##             main      #63   +/-   ##
=======================================
  Coverage   92.89%   92.89%           
=======================================
  Files          13       13           
  Lines         521      521           
=======================================
  Hits          484      484           
  Misses         37       37           

Impacted Files	Coverage Δ
src/inverse_hessian.jl	98.46% <ø> (ø)

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