Fix globbing files using current path pattern

[priitlatt]

PathFinderMixin.find_paths generates erroneous iterator when called with path pattern "." as then essentially Path('.').glob('.') happens, which raises an IndexError. For example:

>>> list(Path('.').glob('.'))
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/priit/.pyenv/versions/3.12.0/lib/python3.12/pathlib.py", line 1094, in glob
    selector = _make_selector(tuple(pattern_parts), self._flavour, case_sensitive)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/priit/.pyenv/versions/3.12.0/lib/python3.12/pathlib.py", line 83, in _make_selector
    pat = pattern_parts[0]
          ~~~~~~~~~~~~~^^^
IndexError: tuple index out of range

More specifically from the context of the tools, this can happen in case of invalid user input from CLI args:

Stacktrace

Traceback (most recent call last):
  File "/Users/builder/.pyenv/versions/3.8.13/lib/python3.8/site-packages/codemagic/cli/cli_app.py", line 243, in invoke_cli
    CliApp._running_app._invoke_action(args)
  File "/Users/builder/.pyenv/versions/3.8.13/lib/python3.8/site-packages/codemagic/cli/cli_app.py", line 184, in _invoke_action
    return cli_action(**action_args)
  File "/Users/builder/.pyenv/versions/3.8.13/lib/python3.8/site-packages/codemagic/cli/action.py", line 83, in wrapper
    return func(self, *args, **kwargs)
  File "/Users/builder/.pyenv/versions/3.8.13/lib/python3.8/site-packages/codemagic/tools/xcode_project.py", line 134, in use_profiles
    profiles = [ProvisioningProfile.from_path(p) for p in profile_paths]
  File "/Users/builder/.pyenv/versions/3.8.13/lib/python3.8/site-packages/codemagic/tools/xcode_project.py", line 134, in <listcomp>
    profiles = [ProvisioningProfile.from_path(p) for p in profile_paths]
  File "/Users/builder/.pyenv/versions/3.8.13/lib/python3.8/site-packages/codemagic/mixins/path_finder.py", line 21, in find_paths
    for path in self.glob(pattern.expanduser()):
  File "/Users/builder/.pyenv/versions/3.8.13/lib/python3.8/pathlib.py", line 1139, in glob
    selector = _make_selector(tuple(pattern_parts), self._flavour)
  File "/Users/builder/.pyenv/versions/3.8.13/lib/python3.8/pathlib.py", line 463, in _make_selector
    pat = pattern_parts[0]
IndexError: tuple index out of range

Handle this case by returning explicitly empty iterator instead.