[ADD] new module 'module_parent_dependencies'

Add a module 'module_parent_dependencies' that allows admin user to see the modules that depend of a target modules. (direct and undirect dependencies)
Flake8: OK;
Coverage: 100%;

(Sample:  https://github.com/legalsylvain/server-tools/blob/a9761578835226ab8df897b1ba397d8e6e85987d/module_parent_dependencies/static/src/img/screenshots/dependencies_list.jpg)
Hi Holger, 

Sorry for the delays.
That line is used to realize a copy of res[id]
  
    parent_ids = list(res[id]) 
If I just write:

     parent_ids = res[id]
it will break the for loop, because the loop add new item in res[id] and so in parent_ids.
I'm not Python expert, maybe there is something more clear or more elegant.

To test that point:  
* install 'module_parent_dependencies' and some  module with a lot of dependencies like 'point_of_sale';
* select 'base' module to see dependencies;

Result:
* with : parent_ids = list(res[id]) --> OK.
* with : parent_ids = res[id] --> KeyError on line 40. ir_module_module.py

Regards.