Allow for AlgorithmType in estimation functions

[timmens]

With this PR, we allow the user to pass Algorithm classes and instances as optimize_options for the estimation functions estimate_ml and estimate_msm.

Note

This fix is not ideal because if the user passes an incorrect type, the error is thrown in optimize.py, which may be unexpected to some users. However, because the estimation functions will undergo a big rewrite in the future, we have decided to tackle this problem then.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Files with missing lines	Coverage Δ
src/estimagic/estimate_ml.py	82.47% <100.00%> (ø)
src/estimagic/estimate_msm.py	89.68% <100.00%> (ø)
src/optimagic/shared/check_option_dicts.py	64.70% <ø> (ø)

... and 1 file with indirect coverage changes

[janosg]

@timmens, I made some small changes that fixed CI in #534