feature: summarizable associations

[thiagoyoussef]

Description

Fixes #2993

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works

Screenshots & recording

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[Paul-Bob]

Looking good overall. The scope on association is not applying as expected

Let's ensure that we apply the field scope option instead of fetching all associated records using parent.send(association_name).

[Paul-Bob]

I've provided some code snippets with suggestions (not tested) on how we might apply the scope from the association field

[Paul-Bob]

Suggested change

	query = resource.authorization&.apply_policy related_records
	Avo::ExecutionContext.new(target: resource.search_query, query: query).handle
	related_records

[Paul-Bob]

Suggested change

	def related_records
	relation_class = BaseResource.get_model_by_name(params[:via_relation_class])
	parent = relation_class.find(params[:via_record_id])
	association_name = BaseResource.valid_association_name(parent, resource.model_key)
	parent.send(association_name)
	end
	def related_records
	relation_class = BaseResource.get_model_by_name(params[:via_relation_class])
	parent = relation_class.find(params[:via_record_id])
	association_name = BaseResource.valid_association_name(parent, resource.model_key)
	parent_resource = ...
	association_field = ...
	query = resource.authorization.apply_policy parent.send(association_name)
	Avo::ExecutionContext.new(
	target: association_field.scope,
	query: query,
	parent: parent,
	resource: resource,
	parent_resource: parent_resource
	).handle
	end