refactor: Minor tidying up

refactor: Move output_dir creation to CLOptions

No need to have this clutter up the top domain level

refactor: Remove RegisterProblems_NS from global namespace

Just call the function when we go to process CL arguments

fix(mass): Don't iterate `vec_length` in qfcreation

- `vec_length` doesn't actually do anything anymore, so it should be set
to 1

refactor: Move and rename CreateMassQFunction

feat: Add HoneeLoadInitialCondition()

refactor: Remove -continue, add use_continue_file internally

refactor: -continue_filename has no default value

refactor: Remove -continue_time_filename option

feat(file): Add HoneeCheckFilenameExtension()

fix: Destroy Ceed objects due to libCEED #1702

fix(matceed): Use new context destroy function signature

See petsc!7900 and !7960

style: Use CeedOperatorFieldGetData

fix: Destroy objects from CeedOperatorFieldGet*

chore: Move CeedData into Honee

refactor: Change User -> Honee

feat(matceed): Add MATOP_GET_{,V}BLOCK_DIAGONAL

Co-authored-by: Jeremy L Thompson <jeremy@jeremylt.org>

feat(matceed): Add vpb/pb assembly messages to MatView

fix(dm_utils): Handle labels without points

fix: Use PetscCount for SegBuffer sizes

Changed in PETSc !7806

fix: PetscMPIInt used for PetscSF functions

fix(matceed): Clean up View formatting

feat: Add PCBJACOBI to MATCEED-compatible PCs

fix(matceed): Correct MatGetDiagonalBlock implementation

MatGetDiagonalBlock does not return the diagonal block of the with
respect to `MatGetBlockSize`, but rather just returns the
diagonal-portion

fix(matceed): Correct MatGetDiagonalBlock implementation

MatGetDiagonalBlock does not return the diagonal block of the with
respect to `MatGetBlockSize`, but rather just returns the
diagonal-portion of the global matrix resident on the current process.

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sync(matceed): Sync with Ratel