Add project-level environment variables

Co-Authored-By: Paperclip <noreply@paperclip.ing>

ui/src/lib/company-portability-sidebar.test.ts

@@ -45,6 +45,7 @@ function makeProject(id: string, name: string): Project {
     leadAgentId: null,
     targetDate: null,
     color: null,
+    env: null,
     pauseReason: null,
     pausedAt: null,
     executionWorkspacePolicy: null,