feat: Add Jacoco/sonar support + integrate EfServices module

Resolves #12 (closed)

Resolves #13 (closed)

This MR adds the following:

• Jacoco + Sonar support
• Integration of EfServices module
• Elimination of code smell
• Additional comments

src/main/java/org/eclipsefoundation/media/api/models/PageInfo.java

@@ -16,6 +16,9 @@ import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
 import com.fasterxml.jackson.databind.annotation.JsonPOJOBuilder;
 import com.google.auto.value.AutoValue;
 
+/**
+ * Pagination information for incoming YT-API responses.
+ */
 @AutoValue
 @JsonDeserialize(builder = AutoValue_PageInfo.Builder.class)
 public abstract class PageInfo {