Implement Question Service

What does this MR do?

Adds the question service.

• Gets the daily question from a collection of questions.
• Allows inserting a question.

Relevant screenshots

(Add any relevant screenshots of MR's functionality)

Testing

• Run the feed-service using docker.
• Insert the JWT key into application.conf.
• Obtain a CSRF-token from a GET response and note it down.
• Insert a question using the .../question endpoint.
• Get a Daily Question.

Relevant issues

Closes #29 (closed)

backend-services/feed-service/app/controllers/DailyQuestionController.scala

+package controllers
+
+import models.{DailyQuestion}
+
+import javax.inject._
+import play.api.mvc._
+import play.api.libs.json.{JsValue}
+
+import scala.concurrent.TimeoutException
+
+
+/**
+ * This controller handles all the Daily Question endpoints.
+ */
+@Singleton
+class DailyQuestionController @Inject()(val controllerComponents: ControllerComponents) extends BaseController {
+
+  /**
+   * Create an Action to fetch the current Daily Question.
+   */
+  def getDailyQuestion() = Action {
+    println("QuestionController:getDailyQuestion")
+
+    try {
+        val question: DailyQuestion = DailyQuestion.getCurrentDailyQuestionAsync()
+        val jsonQuestion: JsValue = DailyQuestion.toJson(question)
+        Ok(jsonQuestion)
+    } catch {
+        case _: TimeoutException => BadRequest("Request timed out")
+        case _: Throwable => BadRequest("Exception raised")
+    }
+  }
+}