get_projection_params has to become a standalone

[ReimarBauer]

In wms we don't need the config_loader but create a dependency to that by importing

 File "/__w/MSS/MSS/docs/../mslib/mswms/mpl_hsec.py", line 45, in <module>
    from mslib.utils.coordinate import get_projection_params

When we extract the function from coordinate the module needs not to be loaded and doesn't import the config_loader

Traceback (most recent call last):
  File "/__w/MSS/MSS/docs/conf.py", line 81, in <module>
    import mslib.mswms.wms
  File "/__w/MSS/MSS/docs/../mslib/mswms/wms.py", line 67, in <module>
    from mslib.mswms.gallery_builder import add_image, write_html, add_levels, add_times, \
  File "/__w/MSS/MSS/docs/../mslib/mswms/gallery_builder.py", line 40, in <module>
    import mswms_settings
  File "/github/home/mss/mswms_settings.py", line 50, in <module>
    from mslib.mswms import mpl_hsec_styles
  File "/__w/MSS/MSS/docs/../mslib/mswms/mpl_hsec_styles.py", line 76, in <module>
    from mslib.mswms.mpl_hsec import MPLBasemapHorizontalSectionStyle
  File "/__w/MSS/MSS/docs/../mslib/mswms/mpl_hsec.py", line 45, in <module>
    from mslib.utils.coordinate import get_projection_params
  File "/__w/MSS/MSS/docs/../mslib/utils/coordinate.py", line 36, in <module>
    from mslib.utils.config import config_loader
  File "/__w/MSS/MSS/docs/../mslib/utils/config.py", line 40, in <module>
    from mslib.msui import constants
  File "/__w/MSS/MSS/docs/../mslib/msui/constants.py", line 38, in <module>
    ROOT_FS = open_fs(MSUI_CONFIG_PATH)
              ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/mssenv/lib/python3.11/site-packages/fs/opener/registry.py", line 220, in open_fs
    _fs, _path = self.open(
                 ^^^^^^^^^^
  File "/opt/conda/envs/mssenv/lib/python3.11/site-packages/fs/opener/registry.py", line 177, in open
    open_fs = opener.open_fs(fs_url, parse_result, writeable, create, cwd)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/mssenv/lib/python3.11/site-packages/fs/opener/osfs.py", line 40, in open_fs
    osfs = OSFS(path, create=create)
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/mssenv/lib/python3.11/site-packages/fs/osfs.py", line 141, in __init__
    raise errors.CreateFailed(message)
fs.errors.CreateFailed: root path '/github/home/.config/msui' does not exist
ERROR conda.cli.main_run:execute(124): `conda run python conf.py` failed. (See above for error)
Error: Process completed with exit code 1.