Updated extraMetadata to allow any type of data

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@chatenium/chatenium-sdk",
-  "version": "1.1.10",
+  "version": "1.1.11",
   "description": "A library for interacting with the Chatenium API",
   "type": "module",
   "main": "dist/index.js",

src/domain/common.schema.ts

@@ -24,5 +24,5 @@ export interface Attachment {
     path: string
     height: number
     width: number
-    extraMetaData: Record<string, string> // Used by clients
+    extraMetaData: Record<string, any> // Used by clients
 }