feat(sso): allow to use OIDC and SAML (#7246)

## What it does
### Backend
- [x] Add a mutation to create OIDC and SAML configuration
- [x] Add a mutation to delete an SSO config
- [x] Add a feature flag to toggle SSO
- [x] Add a mutation to activate/deactivate an SSO config
- [x] Add a mutation to delete an SSO config
- [x] Add strategy to use OIDC or SAML
- [ ] Improve error management

### Frontend
- [x] Add section "security" in settings
- [x] Add page to list SSO configurations
- [x] Add page and forms to create OIDC or SAML configuration
- [x] Add field to "connect with SSO" in the signin/signup process
- [x] Trigger auth when a user switch to a workspace with SSO enable
- [x] Add an option on the security page to activate/deactivate the
global invitation link
- [ ] Add new Icons for SSO Identity Providers (okta, Auth0, Azure,
Microsoft)

---------

Co-authored-by: Félix Malfait <felix@twenty.com>
Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-front/src/modules/settings/security/validation-schemas/SSOIdentityProviderSchema.ts

@@ -0,0 +1,34 @@
+/* @license Enterprise */
+
+import { z } from 'zod';
+
+export const SSOIdentitiesProvidersOIDCParamsSchema = z
+  .object({
+    type: z.literal('OIDC'),
+    clientID: z.string().optional(),
+    clientSecret: z.string().optional(),
+  })
+  .required();
+
+export const SSOIdentitiesProvidersSAMLParamsSchema = z
+  .object({
+    type: z.literal('SAML'),
+    id: z.string().optional(),
+    ssoURL: z.string().url().optional(),
+    certificate: z.string().optional(),
+  })
+  .required();
+
+export const SSOIdentitiesProvidersParamsSchema = z
+  .discriminatedUnion('type', [
+    SSOIdentitiesProvidersOIDCParamsSchema,
+    SSOIdentitiesProvidersSAMLParamsSchema,
+  ])
+  .and(
+    z
+      .object({
+        name: z.string().min(1),
+        issuer: z.string().url().optional(),
+      })
+      .required(),
+  );