Support binary datatype of the columns

[Tobiaspk]

Closes #20 .

☑️ Now supports this dataset: https://www.10xgenomics.com/products/xenium-in-situ/preview-dataset-human-breast

Adding the following changes:

• Ensures that cell_ids are all Utf8 in transcripts, cell_boundaries and nucleus_bandaries files
• Ensures that feature_name is Utf8 in transcripts file
• Adds XeniumPreprocessorV1 preprocessor, which uses a different null_cell_id. Added detection logic using the metadata.

Testing

--> Tested on a xenium v3 dataset. Fixes don't affect outputs, results match previous results.
--> Tested on outdated xenium dataset (https://www.10xgenomics.com/products/xenium-in-situ/preview-dataset-human-breast) and fails!

[erikla]

I pulled the update and have a new error:

Traceback (most recent call last):
  File "/home/ladewie1/micromamba/envs/segger/bin/segger", line 6, in
    sys.exit(app())
             ^^^^^
  File "/home/ladewie1/micromamba/envs/segger/lib/python3.11/site-packages/cyclopts/core.py", line 1869, in call
    result = _run_maybe_async_command(command, bound, resolved_backend)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ladewie1/micromamba/envs/segger/lib/python3.11/site-packages/cyclopts/_run.py", line 50, in _run_maybe_async_command
    return command(*bound.args, **bound.kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ladewie1/bin/github/segger/src/segger/cli/segment.py", line 313, in segment
    datamodule = ISTDataModule(
                 ^^^^^^^^^^^^^^
  File "", line 27, in init
  File "/home/ladewie1/bin/github/segger/src/segger/data/data_module.py", line 160, in post_init
    self.load()
  File "/home/ladewie1/bin/github/segger/src/segger/data/data_module.py", line 172, in load
    tx = self.tx = pp.transcripts
                   ^^^^^^^^^^^^^^
  File "/home/ladewie1/micromamba/envs/segger/lib/python3.11/functools.py", line 1001, in get
    val = self.func(instance)
          ^^^^^^^^^^^^^^^^^^^
  File "/home/ladewie1/bin/github/segger/src/segger/io/preprocessor.py", line 439, in transcripts
    .collect()
     ^^^^^^^^^
  File "/home/ladewie1/micromamba/envs/segger/lib/python3.11/site-packages/polars/_utils/deprecation.py", line 97, in wrapper
    return function(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ladewie1/micromamba/envs/segger/lib/python3.11/site-packages/polars/lazyframe/opt_flags.py", line 326, in wrapper
    return function(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ladewie1/micromamba/envs/segger/lib/python3.11/site-packages/polars/lazyframe/frame.py", line 2440, in collect
    return wrap_df(ldf.collect(engine, callback))
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
polars.exceptions.ComputeError: cannot compare string with numeric type (i32)

[Tobiaspk]

Branch now up to date. Dataset mentioned above runs through. Git history on top of pr #22 . Ready to merge from my side.