feat(Authoring): Translate with AI

[Aaron-Detre]

Changes

• Added an API endpoint to handle AWS Translate requests.
• Changed Controller -> RestController since saveTranslations already had ResponseBody.

Testing

• Test with feat(Authoring): Translate with AI WISE-Client#2272.
• Add the properties below to application-dockerdev.properties.
  • If you don't set values for these, the translate with AI button should not appear.
  • If the values you set don't work, clicking the translate with AI button should give you an alert with a warning.

aws.accessKeyId=
aws.secretAccessKey=
aws.region=

[hirokiterashima]

• We need to handle case when aws settings are not specified in application.properties. Right now, the API throws an exception and won't start.
• Add the new aws settings to application_sample.properties and application-dockerdev-sample.properties, with explanation on what they're used for.

[hirokiterashima]

Rename endpoint to /api/author/project/translate/suggest

Suggested change

	@PostMapping("translationSuggestions")
	@PostMapping("suggest")

[hirokiterashima]

Instead of ObjectNode, create a class TranslatableText(?)

See how we did CRaterPingRequest here: https://github.com/WISE-Community/WISE-API/blob/translate-with-ai/src/main/java/org/wise/vle/web/CRaterController.java#L60