Add the documentation about "get_current_plugin_path" method

[sambarza]

Document the method "get_current_plugin_path" in the settings page

[pieroit]

We'll try to add also a get_plugin method to get the object itself

Do you thing from a devx point of view, which name is better?
get_current_plugin_path
get_plugin_path
plugin_path
?

[sambarza]

Are two different topics, correct?
1- We'll try to add also a get_plugin method to get the object itself
2- Question about the name

If correct, I like the method to get the current plugin instance, then the dev can do:

get_plugin().load_settings()
get_plugin().path

Maybe the method get_plugin can have the argument plugin_name, if not specified it returns the current plugin instance.
Can be useful to get the plugin instance from other plugins?

[pieroit]

Thanks @sambarza merged your idea with @Jhonnyr97 PR (cheshire-cat-ai/core#550)

Now we can do from a plugin:

cat.mad_hatter.get_plugin().id # gets plugin folder name
cat.mad_hatter.get_plugin().path # gets plugin folder path
cat.mad_hatter.get_plugin().load_settings()
cat.mad_hatter.get_plugin().save_settings(settings)