FEATURE: Automatically detect and translate posts into Post and PostLocalization

[nattsw]

With the introduction of Post.locale and PostLocalization in core, we want to use this plugin's translator provider to automatically detect and translate posts and save it into those tables.

Considerations: In a future PR we will also apply CookedPostProcessor to the cooked translations.

[Copilot]

Pull Request Overview

This PR introduces automatic translation functionality to detect and translate posts into Post and PostLocalization using the translator provider.

• Adds tests in spec files to verify that translation jobs are enqueued or skipped based on settings.
• Updates job logic to detect a post’s locale and translate into the configured target languages.
• Enqueues the detect_translate_post job when a post is processed if experimental localization is enabled.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
spec/lib/automatic_translation_spec.rb	Tests for enqueuing the detect_translate_post job upon post processing.
spec/jobs/detect_translate_post_spec.rb	Verifies job execution logic under various configuration scenarios.
lib/discourse_translator/automatic_translations.rb	Enqueues the detect_translate_post job when experimental content localization is enabled.
app/jobs/regular/detect_translate_post.rb	Implements job logic to detect locale, iterate over target languages, and handle translation errors gracefully.