fix(swf-dis): fixes for swf dis functionality

[langevin-usgs]

Improved capabilities for surface water models:

• added support for IDOMAIN
• added tests to ensure binary grid files are correct
• renamed botm to bottom for the three surface water grid types (DISV1D, DIS2D, DISV2D)

Tests require corresponding changes in flopy (PR #2295) in order to work.

Checklist of items for pull request

• Replaced section above with description of pull request
• Added new test or modified an existing test
• Ran ruff on new and modified python scripts in .doc, autotests, doc, distribution, pymake, and utils subdirectories.
• Formatted new and modified Fortran source files with fprettify
• Added doxygen comments to new and modified procedures
• Updated definition files
• Removed checklist items not relevant to this pull request

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