Reorganized the sign-in-up code for better readability and maintainability. Introduced validation for workspace invitations and moved some utility functions to dedicated methods. Added a migration for new auth provider columns in the workspace entity.

Removed unused `EnvironmentService` and redundant `code` property in exceptions for clarity. Simplified email validation in `workspace-invitation.service.ts`. Refactored tests to remove unnecessary `targetWorkspaceSubdomain` property.

Removed redundant services from auth and core modules to streamline the code. Added debug log statements in sign-in-up service and skipped certain test cases temporarily for evaluation.

Eliminate debug logging for workspace invite tokens and validation. This cleanup improves readability and reduces console clutter during runtime.

…ninup

# Conflicts:
#	packages/twenty-server/src/engine/core-modules/auth/services/sign-in-up.service.ts

…facto/improve-signinup

# Conflicts:
#	packages/twenty-server/src/engine/core-modules/auth/dto/available-workspaces.output.ts
#	packages/twenty-server/src/engine/core-modules/auth/services/auth.service.ts
#	packages/twenty-server/src/engine/core-modules/auth/services/sign-in-up.service.ts
#	packages/twenty-server/src/engine/core-modules/user/services/user.service.ts
#	packages/twenty-server/src/engine/core-modules/workspace/services/workspace.service.ts

Removed the redundant `code` property from WorkspaceInvitationException. Adjusted the import order in WorkspaceResolver to comply with coding standards.

…facto/improve-signinup

Replace user object with user ID in saveDefaultWorkspace method call to fix incorrect parameter type. This ensures that the function operates as expected and prevents potential errors in default workspace assignment.