Convert tool to convert wmtk mesh types

[mtao]

We currently support 2-3 mesh formats within the toolkit (vtu / hdf5 / msh) and it would be useful to be able to directly create/manipulate meshes using them. This is particularly annoying because hdf5 supports multimesh configurations while others do not - For building examples that use multimesh we can create simple input/output pairs by sticking to hdf5 / use this tool to help build hdf5 files from inputs

[codecov]

Codecov Report

Attention: Patch coverage is 71.24736% with 136 lines in your changes missing coverage. Please review.

Project coverage is 76.77%. Comparing base (4c6ee8e) to head (b63a823).
Report is 34 commits behind head on main.

Files with missing lines	Patch %	Lines
...h/src/wmtk/components/multimesh/NamedMultiMesh.cpp	68.71%	56 Missing ⚠️
...h/src/wmtk/components/multimesh/MeshCollection.cpp	56.00%	22 Missing ⚠️
...nents/utils/wmtk/components/utils/PathResolver.cpp	67.24%	19 Missing ⚠️
applications/convert/main.cpp	87.25%	13 Missing ⚠️
...ts/output/wmtk/components/output/OutputOptions.cpp	55.55%	8 Missing ⚠️
...omponents/output/wmtk/components/output/output.cpp	0.00%	8 Missing ⚠️
...mponents/input/src/wmtk/components/input/input.cpp	76.00%	6 Missing ⚠️
...s/input/src/wmtk/components/input/InputOptions.cpp	72.72%	3 Missing ⚠️
...s/input/src/wmtk/components/input/InputOptions.hpp	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #832      +/-   ##
==========================================
+ Coverage   76.62%   76.77%   +0.14%     
==========================================
  Files         463      466       +3     
  Lines       23035    23374     +339     
  Branches     2580     2620      +40     
==========================================
+ Hits        17651    17945     +294     
- Misses       5373     5418      +45     
  Partials       11       11              

Flag	Coverage Δ
wildmeshing	76.77% <71.24%> (+0.14%)	⬆️

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[teseoch]

we need tests for this