Update vendored cfe submodule

[aaraney]

Update the vendored version of the cfe submodule. Several additions and changes are introduced in this update. To the best of my abilities, these additions and changes are listed below.

Note, with this update, extern/cfe/CMakeList.txt is now out of date and will not build all portions of cfe. Before merging this PR, the CMakeList in extern/cfe either needs to be updated or removed. In the mean time, the latest version of cfe can be built (from the root of the ngen repo) using:

cmake -DNGEN=ON -B extern/cfe/cfe/cmake_build -S extern/cfe/cfe 
cmake --build extern/cfe/cfe/cmake_build

Additions

• New output variable SOIL_TO_GW_FLUX (percolation) added (added_new_bmi_output_variable cfe#92).

Changes

• Variable name ice_fraction_xinan is now named ice_fraction_xinanjiang(changed_bmi_name cfe#94).
• Cmake updated to support building for BMI (ajk/cfebmi_shared_library cfe#81).
• Potential char overflow in read_file_line_counts fixed (fix potential overflow that can lead to infinite loop in file reading cfe#85).

Todos

• Update / remove extern/cfe/CMakeList.txt

Notes:

• unblocks Automate building external libraries #694

Checklist

• PR has an informative and human-readable title
• Changes are limited to a single goal (no scope creep)
• Code can be automatically merged (no conflicts)
• Code follows project standards (link if applicable)
• Passes all existing automated tests
• Any change in functionality is tested
• New functions are documented (with a description, list of inputs, and expected output)
• Placeholder code is flagged / future todos are captured in comments
• Project documentation has been updated (including the "Unreleased" section of the CHANGELOG)
• Reviewers requested with the Reviewers tool ➡️

[aaraney]

I feel like we should bump the minor version of cfe in CMakeList.txt. Thoughts?

[hellkite500]

My only concern is making sure we have updated configs for any integration tests, both internal gtests and any workflow test that builds from the submodule.

[PhilMiller]

Could this be rebased and the submodule version in here be updated, so that we also get NOAA-OWP/cfe#101

That would unblock #694