feat: add diagnostics for algs exceeding max length

[vetlek]

Closes #122

[einarsi]

Will this not be invalid for all template files since they almost exclusively have calcs that include Jinja labels? E.g. the 14-character long {{ wellname }} will typically be replaced by three characters such as A09.
Is there a way to have a configuration setting where this is only performed on output files from scg? Either by checking the outfile key in the yaml config or by requiring the user to input the files in the project workspace for which the test should be performed? Or alternatively selecting paths for which this check should not be performed?

[einarsi]

Suggest to diagnose the length of the Alg only if it contains no Jinja expressions/labels. That way it should warn of issues for the final rendered file (and of course other standalone files).

[vetlek]

Closing. Will be addressed in #233