test(bruno): Add API tests for Kobo, Koreader, OPDS, collections

- Add Kobo bookmark/markup sync tests
- Add Koreader progress/bookmark sync tests
- Add OPDS feed tests
- Add collection tests
- Add sync tests for book linking

bruno/sync-kobo/link-book.bru

@@ -0,0 +1,26 @@
+meta {
+  name: "Link Unlinked Book - Manual Resolution"
+  type: http
+  seq: 5
+}
+
+post {
+  url: {{base_url}}/api/sync/link-book
+  body: json({
+    "unlinked_book_id": "{{unlinked_book_id}}",
+    "media_item_id": "{{media_item_id}}",
+    "confidence_score": 1.0
+  })
+  auth: {
+    type: bearer
+    bearer: {{user_token}}
+  }
+}
+
+assert {
+  response.status == 200
+  response.body.status == "linked"
+  response.body.unlinked_book_id exists()
+  response.body.media_item_id exists()
+  response.body.message exists()
+}