fixed middleware path

[skull8888888]

[!IMPORTANT] Fix middleware path matcher and add workspace membership check in route.ts.

• Authorization:
  • Add isCurrentUserMemberOfWorkspace check in POST function in route.ts to ensure user is a member of the workspace.
  • Return 401 Unauthorized if user is not a member.
• Middleware:
  • Change path matcher in middleware.ts from :path* to :path+ for /api/projects and /project.

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