Re-add Picard Nonconvergence Diagnostics

[apcraig]

PR checklist

• [X] Short (1 sentence) summary of your PR: Re-add Picard Nonconvgence Diagnostics
• [X] Developer(s): dabail10
• [X] Suggest PR reviewers from list in the column to the right.
• [X] Please copy the PR test results link or provide a summary of testing completed below. Test results are bit-for-bit. Tested on Icepack and CICE on cheyenne, full test suite, 3 compilers.
  https://github.com/CICE-Consortium/Test-Results/wiki/cice_by_hash_forks#fd0549efc3307c95e4f0174df2e9773fbb2814df https://github.com/CICE-Consortium/Test-Results/wiki/icepack_by_hash_forks#2a6741c1ec958858e330b327a4a335fa511f405a
• How much do the PR code changes differ from the unmodified code?
  • [X] bit for bit
  • [ ] different at roundoff level
  • [ ] more substantial
• Does this PR create or have dependencies on CICE or any other models?
  • [ ] Yes
  • [X] No
• Does this PR add any new test cases?
  • [ ] Yes
  • [X] No
• Is the documentation being updated? ("Documentation" includes information on the wiki or in the .rst files from doc/source/, which are used to create the online technical docs at https://readthedocs.org/projects/cice-consortium-cice/.)
  • [ ] Yes
  • [X] No, does the documentation need to be updated at a later time?
    • [ ] Yes
    • [X] No

• [X] Please provide any additional information or relevant details below:

  Merge branch 'picardnonconv' of https://github.com/e3sm-project/icepack into picardnonconvdiags

  See https://github.com/e3sm-Project/icepack/tree/picardnonconv

  This commit got lost in E3SM-Project, bringing it back into Icepack.