RecipeConfigInstaller should process translation config files

Problem/Motivation

RecipeConfigInstaller should process translation files the same way the normal ConfigInstaller does, ie adding files in collections within the config directory (in this case, config/language/[langcode] should install the config in that collection.

Steps to reproduce

Create a recipe that installs the following modules:
- node
- language
- config_translation

Config should look like:
language/[langcode]/[translated_simple_config].settings.yml
language.entity.[langcode].yml
[simple_config].settings.yml

- Verify that when you apply the recipe, the config in the root gets processed, but the config in the collection doesn't.

Proposed resolution

Update RecipeConfigInstaller to import config in collections the same way ConfigInstaller does.