test(editor): move blocksuite test to tests folder (#10917)

tests/blocksuite/snapshots/clipboard/clipboard.spec.ts/clipboard-copy-nested-items-clipboard.html

@@ -0,0 +1,9 @@
+<div class="affine-paragraph-block-container">
+  <p>bc</p>
+  <div class="affine-block-children-container" style="padding-left: 26px;">
+    <div class="affine-paragraph-block-container">
+      <p>d</p>
+      <div class="affine-block-children-container" style="padding-left: 26px;"></div>
+    </div>
+  </div>
+</div>