feat(editor): edgeless page block toolbar (#9707)

Close [BS-2315](https://linear.app/affine-design/issue/BS-2315/page-block-header)

### What Changes
- Add header toolbar to page block (the first note in canvas)
- Add e2e tests
- Add some edgeless e2e test utils.  **The package `@blocksuite/affine` was added to `"@affine-test/kit"`**

tests/kit/tsconfig.json

@@ -6,5 +6,8 @@
     "tsBuildInfoFile": "./dist/tsconfig.tsbuildinfo"
   },
   "include": ["./src"],
-  "references": [{ "path": "../../tools/utils" }]
+  "references": [
+    { "path": "../../tools/utils" },
+    { "path": "../../blocksuite/affine/all" }
+  ]
 }