feat(MED-161): store more fields about medipost analysis response

lib/types/medipost.ts

@@ -145,7 +145,7 @@ export type MedipostPublicMessageResponse = IMedipostResponseXMLBase & {
 };
 
 export type UuringuVastus = {
-  VastuseVaartus: number; // text according to docs, but based on examples and logically, float
+  VastuseVaartus: string; // numeric or text like 'Negatiivne'
   VastuseAeg: string;
   NormYlem?: {
     '#text': number;