chore: update dependencies and enhance document schema

- Updated package.json and package-lock.json to include the new dependency 'quill-to-pdf' for improved document export functionality.
- Modified DocumentSchema to introduce a new 'DocumentExportObject' type, facilitating document export operations.
- Cleaned up commented-out code in document.service.ts and minio.service.ts for better readability and maintainability.
- Adjusted quiz schema to expose user input and questions as JSON types, enhancing data flexibility.
- Updated workshop subscription logic to maintain accurate participant counts upon new subscriptions.

These changes improve the overall functionality and maintainability of the project, ensuring better document handling and schema consistency.

package.json

@@ -89,6 +89,7 @@
     "openai": "^4.76.0",
     "passport-jwt": "^4.0.1",
     "quill": "^2.0.3",
+    "quill-to-pdf": "^1.0.7",
     "reflect-metadata": "^0.2.2",
     "rxjs": "^7.8.1",
     "swagger-ui-express": "^5.0.1",
@@ -139,13 +140,19 @@
     "@css-inline/css-inline-linux-x64-musl": "^0.14.3"
   },
   "jest": {
-    "moduleFileExtensions": ["js", "json", "ts"],
+    "moduleFileExtensions": [
+      "js",
+      "json",
+      "ts"
+    ],
     "rootDir": "src",
     "testRegex": ".*\\.spec\\.ts$",
     "transform": {
       "^.+\\.(t|j)s$": "ts-jest"
     },
-    "collectCoverageFrom": ["**/*.(t|j)s"],
+    "collectCoverageFrom": [
+      "**/*.(t|j)s"
+    ],
     "coverageDirectory": "../coverage",
     "testEnvironment": "node"
   },