[RPP] Add tutorials in Annotations tab inside bar when it is empty

The text/picture is not the final version. But we can have something to see how it looks. Will update before launch.

screenshots: https://screenshot.googleplex.com/3r7LT4geDRzrJ6d

Bug: 362676898
Change-Id: I6ed8860a2a1f63ea59360d48525006f65039ee0e
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/5829217
Commit-Queue: Nancy Li <nancyly@chromium.org>
Reviewed-by: Alina Varkki <alinavarkki@chromium.org>
7 files changed
tree: 6fd6139c83c261a2e2d59544d6412dd3ddcddefb
  1. .vscode/
  2. build_overrides/
  3. config/
  4. docs/
  5. extension-api/
  6. extensions/
  7. front_end/
  8. inspector_overlay/
  9. node_modules/
  10. scripts/
  11. test/
  12. third_party/
  13. v8/
  14. .clang-format
  15. .editorconfig
  16. .eslintignore
  17. .eslintrc.js
  18. .git-blame-ignore-revs
  19. .gitallowed
  20. .gitattributes
  21. .gitignore
  22. .gitmodules
  23. .gn
  24. .mailmap
  25. .npmignore
  26. .npmrc
  27. .style.yapf
  28. .stylelintignore
  29. .stylelintrc.json
  30. AUTHORS
  31. BUILD.gn
  32. codereview.settings
  33. CONTRIBUTING.md
  34. DEPS
  35. favicon.ico
  36. LICENSE
  37. OWNERS
  38. package-lock.json
  39. package.json
  40. PRESUBMIT.py
  41. README.md
  42. tsconfig.json
  43. WATCHLISTS
README.md

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