Improve interface

[junyuan-chen]

A new keyword argument is added to allow suppressing the warning messages.
Finer control is implemented for how a OnceDifferentiable should be reinitiated when rerunning a solver.

[codecov]

Codecov Report

Attention: Patch coverage is 96.42857% with 1 line in your changes missing coverage. Please review.

Project coverage is 98.62%. Comparing base (b3ce9f6) to head (802b6f9).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/hybrid.jl	80.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #7      +/-   ##
==========================================
- Coverage   99.04%   98.62%   -0.43%     
==========================================
  Files           6        6              
  Lines         420      435      +15     
==========================================
+ Hits          416      429      +13     
- Misses          4        6       +2     

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