[ISSUE] Improper sanitization/encoding of file paths

[dakinggg]

Description
if I make a download request for a file with a question mark in it using WorkspaceClient().files.download(...) , I get

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/composer/utils/object_store/uc_object_store.py", line 179, in download_object
    contents = self.client.files.download(self._get_object_path(object_name)).contents
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/databricks/sdk/service/files.py", line 534, in download
    res = self._api.do('GET', f'/api/2.0/fs/files/{file_path}', headers=headers, raw=True)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/databricks/sdk/core.py", line 127, in do
    return retryable(self._perform)(method,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/databricks/sdk/retries.py", line 50, in wrapper
    raise err
  File "/usr/lib/python3/dist-packages/databricks/sdk/retries.py", line 29, in wrapper
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/databricks/sdk/core.py", line 220, in _perform
    raise self._make_nicer_error(response=response, **payload) from None
databricks.sdk.errors.mapping.BadRequest: Unexpected query parameters: <part of filename after the question mark>.

Similarly, files with a # sign in them simply return a file not found.

Reproduction
Just make a file with the offending character and then try to download it with the sdk.

Expected behavior
All valid filenames can be downloaded using the sdk.

Is it a regression?
No

[mgyucht]

@dakinggg this was addressed in #596.