feat: Allow full survey editing & restrict editing to unpublished surveys

- Enabled full survey editing functionality
- Restricted survey editing to unpublished surveys only
- Added various improvements and optimizations

.vs/survey-beta2/v17/DocumentLayout.json

@@ -0,0 +1,23 @@
+{
+  "Version": 1,
+  "WorkspaceRootPath": "C:\\Users\\alioa\\source\\repos\\survey-beta2\\",
+  "Documents": [],
+  "DocumentGroupContainers": [
+    {
+      "Orientation": 0,
+      "VerticalTabListWidth": 284,
+      "DocumentGroups": [
+        {
+          "DockedWidth": 200,
+          "SelectedChildIndex": -1,
+          "Children": [
+            {
+              "$type": "Bookmark",
+              "Name": "ST:0:0:{cce594b6-0c39-4442-ba28-10c64ac7e89f}"
+            }
+          ]
+        }
+      ]
+    }
+  ]
+}