add jsdoc comments

apps/remix-ide/src/app/files/fileManager.ts

@@ -927,6 +927,12 @@ class FileManager extends Plugin {
     return exists
   }
 
+  /**
+   * Check if a file can be moved
+   * @param src source file
+   * @param dest destination file
+   * @returns {boolean} true if the file is allowed to be moved
+   */
   async moveFileIsAllowed (src: string, dest: string) {
     try {
       src = this.normalize(src)
@@ -949,6 +955,12 @@ class FileManager extends Plugin {
     }
   }
 
+  /**
+   * Check if a folder can be moved
+   * @param src source folder
+   * @param dest destination folder
+   * @returns {boolean} true if the folder is allowed to be moved
+   */
   async moveDirIsAllowed (src: string, dest: string) {
     try {
       src = this.normalize(src)