feat(web,server): support maintainer role

[rot1024]

Workspaces have been integrated into a mechanism similar to Re:Earth CMS, and a maintainer has been added to the roles. Therefore, changes have been made to make the role of maintainer available in Re:Earth.

[netlify]

✅ Deploy Preview for reearth-web ready!

Name	Link
🔨 Latest commit	9648c34
🔍 Latest deploy log	https://app.netlify.com/sites/reearth-web/deploys/65389a46206c5d0008e04a86
😎 Deploy Preview	https://deploy-preview-749--reearth-web.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[codecov]

Codecov Report

Merging #749 (588fc2e) into main (a8fb535) will decrease coverage by 0.01%.
The diff coverage is 29.62%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #749      +/-   ##
==========================================
- Coverage   26.42%   26.42%   -0.01%     
==========================================
  Files        1602     1602              
  Lines      175365   175370       +5     
  Branches     3929     3929              
==========================================
- Hits        46337    46335       -2     
- Misses     127939   127946       +7     
  Partials     1089     1089              

Flag	Coverage Δ
server	33.56% <0.00%> (-0.01%)	⬇️
web	24.72% <61.53%> (-0.01%)	⬇️
web-beta	24.72% <61.53%> (-0.01%)	⬇️
web-classic	24.72% <61.53%> (-0.01%)	⬇️
web-utils	24.72% <61.53%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
...onents/organisms/EarthEditor/CanvasArea/convert.ts	62.22% <100.00%> (-0.25%)	⬇️
web/src/services/gql/__gen__/graphql.ts	100.00% <100.00%> (ø)
...ecules/Settings/Workspace/MemberListItem/index.tsx	0.00% <0.00%> (ø)
...c/components/organisms/Settings/Workspace/hooks.ts	0.00% <0.00%> (ø)
...internal/adapter/gql/gqlmodel/convert_workspace.go	61.81% <0.00%> (ø)
web/src/classic/gql/fragments/layer.ts	0.00% <0.00%> (ø)
server/internal/app/auth_client.go	0.00% <0.00%> (ø)