feat: add ES annotations

src/core/things/Book.ts

@@ -30,16 +30,22 @@ export interface SCBookWithoutReferences
   extends SCCreativeWorkWithoutReferences {
   /**
    * Edition of a book
+   * 
+   * @keyword
    */
   bookEdition?: string;
 
   /**
    * ISBN of a book
+   * 
+   * @keyword
    */
   isbn: string;
 
   /**
    * Number of pages of a book
+   * 
+   * @integer
    */
   numberOfPages?: number;
 
@@ -58,6 +64,7 @@ export interface SCBookWithoutReferences
  * A book
  *
  * @validatable
+ * @indexable
  */
 export interface SCBook
   extends SCCreativeWork, SCBookWithoutReferences {
@@ -84,6 +91,8 @@ export interface SCBookTranslatableFields
   extends SCThingWithCategoriesTranslatableProperties, SCCreativeWorkTranslatableProperties {
   /**
    * Translation of an edition of a book
+   * 
+   * @keyword
    */
   bookEdition?: string;
 }