Using typed-settings with multiple click commands and pluggy.

Hi Stefan,

typed-settings looks fantastic and I am wondering whether it fits to my package. I have two questions.

1. The package has a cli based on click with multiple commands where each command has its own set of options which are extending the options of the click.group.

   I saw that it is possible to pass settings from the group to the commands (https://gitlab.com/sscherfke/typed-settings/-/blob/main/tests/test_click.py#L698). But, is it possible to define settings for the group and the command which will be merged or at least passed as two objects to the command?

   Here is a very minimal example which I used for toying around.

   import click
   import typed_settings as ts
   
   
   @ts.settings
   class OverallSettings:
       verbose: int = ts.option(default=0, help="verbosity")
   
   
   @click.group()
   @ts.click_options(OverallSettings, "myapp")
   def main(settings):
       print(settings)
   
   
   @ts.settings
   class FirstSettings:
       string: str
   
   
   @main.command()
   @ts.pass_settings
   @ts.click_options(FirstSettings, "myapp")
   def first_command(settings):
       print(settings)
   
   
   if __name__ == '__main__':
       main()

   Executing the following does not work

   $ python .\click_.py first-command --string hello
   OverallSettings(verbose=0)
   Traceback (most recent call last):
     File "C:\Users\TobiasR\git\pytask\click_.py", line 29, in <module>
       main()
     ...
     File "C:\tools\miniconda3\envs\pytask\lib\site-packages\typed_settings\click_utils.py", line 354, in cb
       _set_path(settings, path, value)
     File "C:\tools\miniconda3\envs\pytask\lib\site-packages\typed_settings\_dict_utils.py", line 79, in _set_path
       dct[key] = val
   TypeError: 'OverallSettings' object does not support item assignment

2. The package uses pluggy for loading plugins which are allowed to extend the cli by adding commands and options to commands. I saw the stub for an example with pytest so you might have thought about how to dynamically generate a settings class. My simple take on it would be to gather dictionaries of options for the group and the commands and call Settings = ts.settings()(attrs.make_class("Settings", options)).

Thanks for your help in advance!