Expose schedule with ETAs in check

[blegat]

To be consistent with

pyvroom/src/bind/input/input.cpp

Line 68 in 80a84ad

.def("_solve",

and

pyvroom/src/bind/input/input.cpp

Line 75 in 80a84ad

.def("_solve",

we rename check to _check for the wrapped C++ method.
Then create a check python function (again, consistently with the solve python function) that wraps the solution, making it easy to access the schedule with ETAs.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.6%. Comparing base (80a84ad) to head (78ec7c1).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff          @@
##            main    #138   +/-   ##
=====================================
  Coverage   79.5%   79.6%           
=====================================
  Files         29      29           
  Lines       1902    1907    +5     
  Branches     149     149           
=====================================
+ Hits        1513    1518    +5     
  Misses       377     377           
  Partials      12      12           

Flag	Coverage Δ
binding	71.7% <100.0%> (ø)
python	92.2% <100.0%> (+<0.1%)	⬆️

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[jonathf]

Good catch. I ldidn't noticed the return value had change.