Add file property to AnnotationProperties (#896)

src/core.ts

@@ -41,6 +41,11 @@ export interface AnnotationProperties {
    */
   title?: string
 
+  /**
+   * The path of the file for which the annotation should be created.
+   */
+  file?: string
+
   /**
    * The start line for the annotation.
    */

src/utils.ts

@@ -32,6 +32,7 @@ export function toCommandProperties(
 
   return {
     title: annotationProperties.title,
+    file: annotationProperties.file,
     line: annotationProperties.startLine,
     endLine: annotationProperties.endLine,
     col: annotationProperties.startColumn,