feat(*): allow to select auth providers + add multiworkspace with subdomain management (#8656)

## Summary
Add support for multi-workspace feature and adjust configurations and
states accordingly.
- Introduced new state isMultiWorkspaceEnabledState.
- Updated ClientConfigProviderEffect component to handle
multi-workspace.
- Modified GraphQL schema and queries to include multi-workspace related
configurations.
- Adjusted server environment variables and their respective
documentation to support multi-workspace toggle.
- Updated server-side logic to handle new multi-workspace configurations
and conditions.

packages/twenty-server/src/utils/__test__/get-domain-name-by-email.spec.ts

@@ -0,0 +1,27 @@
+import { getDomainNameByEmail } from 'src/utils/get-domain-name-by-email';
+
+describe('getDomainNameByEmail', () => {
+  it('should return the domain name for a valid email', () => {
+    expect(getDomainNameByEmail('user@example.com')).toBe('example.com');
+  });
+
+  it('should throw an error if email is empty', () => {
+    expect(() => getDomainNameByEmail('')).toThrow('Email is required');
+  });
+
+  it('should throw an error if email does not contain "@"', () => {
+    expect(() => getDomainNameByEmail('userexample.com')).toThrow(
+      'Invalid email format',
+    );
+  });
+
+  it('should throw an error if email has more than one "@"', () => {
+    expect(() => getDomainNameByEmail('user@example@com')).toThrow(
+      'Invalid email format',
+    );
+  });
+
+  it('should throw an error if domain part is empty', () => {
+    expect(() => getDomainNameByEmail('user@')).toThrow('Invalid email format');
+  });
+});

packages/twenty-server/src/utils/__test__/is-work-email.spec.ts

@@ -0,0 +1,24 @@
+import { isWorkEmail } from 'src/utils/is-work-email';
+
+describe('isWorkEmail', () => {
+  it('should return true for a work email', () => {
+    expect(isWorkEmail('user@company.com')).toBe(true);
+  });
+
+  it('should return false for a personal email', () => {
+    expect(isWorkEmail('user@gmail.com')).toBe(false);
+  });
+
+  it('should return false for an empty email string', () => {
+    expect(isWorkEmail('')).toBe(false);
+  });
+
+  it('should return false for an email with undefined domain', () => {
+    // Assuming getDomainNameByEmail(email) returns undefined if no domain.
+    expect(isWorkEmail('user@')).toBe(false);
+  });
+
+  it('should return false for an invalid email format', () => {
+    expect(isWorkEmail('invalid-email')).toBe(false);
+  });
+});