Track infeasible error

[niinina]

Some of the growth functions throw an error or warning, if the chosen bounds cannot be used to successfully solce the equation system.

infeasible error

• get_secretion

just a UserWarning

• get_metabs_essential_for_growth_wrapper
• growth_sim_single
• growth_sim_multi
• growth_analysis
• get_essential_reactions_via_single_knockout
• test_growth_with_source

Should the error be catched, in case multiple tests are run back to back?
Should the warning be reported in some other way?

[cb-Hades]

Currently, issue does not occur with the test models. A model / testcase, that replicates the error, would be useful @niinina

=> after re-examination, the "error" was traced to the bounds being set to unreasonable values with another function during testing