Draft: Resolve "[Document Sealing] Implement PDF parser"

Closes #1

dist/pdfParser.d.ts

@@ -2,8 +2,8 @@
 import { IGetMetaResponse } from "./types";
 declare type SealCoords = {
     [key: string]: {
-        x: number;
-        y: number;
+        x: string;
+        y: string;
     };
 };
 declare class PDFparser {