feat(editor): add affine toolbar widget

[fundon]

No description provided.

[fundon]

• feat(editor): add toolbar registry extension #9572
• feat(editor): add affine toolbar widget #9571 👈 (View in Graphite)
• canary

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 52.73%. Comparing base (69e73af) to head (ea53486).
Report is 12 commits behind head on canary.

Additional details and impacted files

@@           Coverage Diff           @@
##           canary    #9571   +/-   ##
=======================================
  Coverage   52.72%   52.73%           
=======================================
  Files        2163     2169    +6     
  Lines       97368    97455   +87     
  Branches    16228    16244   +16     
=======================================
+ Hits        51338    51391   +53     
- Misses      44629    44667   +38     
+ Partials     1401     1397    -4     

Flag	Coverage Δ
server-test	78.13% <ø> (-0.01%)	⬇️
unittest	32.31% <100.00%> (-0.01%)	⬇️

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