feat: save page - updated + page history

client/graph/editor/update.gql

@@ -0,0 +1,12 @@
+mutation ($id: Int!, $content: String, $description: String, $editor: String, $isPrivate: Boolean, $isPublished: Boolean, $locale: String, $path: String, $publishEndDate: Date, $publishStartDate: Date, $tags: [String], $title: String) {
+  pages {
+    update(id: $id, content: $content, description: $description, editor: $editor, isPrivate: $isPrivate, isPublished: $isPublished, locale: $locale, path: $path, publishEndDate: $publishEndDate, publishStartDate: $publishStartDate, tags: $tags, title: $title) {
+      responseResult {
+        succeeded
+        errorCode
+        slug
+        message
+      }
+    }
+  }
+}