Adding for_collection to the BaseSerializer.

[russ]

Fixes #866

This for_collection override takes a Lucky::Paginator argument as an option and changes the output to have extra pagination data added in.

[jwoertink]

Nice! Looks good. It's just missing the part that actually adds this to the generated app.

lucky_cli/src/lucky_cli/src_template.cr

Lines 214 to 218 in ccaa571

	src_dir.add_folder("serializers") do |serializers_dir|
	serializers_dir.add_file(".keep")
	serializers_dir.add_file("base_serializer.cr") do |io|
	ECR.embed("#{__DIR__}/../web_app_skeleton/src/serializers/base_serializer.cr.ecr", io)
	end

[russ]

Oops. That would make sense wouldn't it. lol

[jwoertink]

For this, you may need to run earthly +update-snapshot locally. I think that should update the fixtures and set all of this