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-server/.env.example

@@ -37,6 +37,7 @@ REDIS_URL=redis://localhost:6379
 # AUTH_GOOGLE_CLIENT_SECRET=replace_me_with_google_client_secret
 # AUTH_GOOGLE_CALLBACK_URL=http://localhost:3000/auth/google/redirect
 # AUTH_GOOGLE_APIS_CALLBACK_URL=http://localhost:3000/auth/google-apis/get-access-token
+# AUTH_SSO_ENABLED=false
 # SERVERLESS_TYPE=local
 # STORAGE_TYPE=local
 # STORAGE_LOCAL_PATH=.local-storage
@@ -74,3 +75,5 @@ REDIS_URL=redis://localhost:6379
 # MUTATION_MAXIMUM_AFFECTED_RECORDS=100
 # CHROME_EXTENSION_ID=bggmipldbceihilonnbpgoeclgbkblkp
 # PG_SSL_ALLOW_SELF_SIGNED=true
+# SESSION_STORE_SECRET=replace_me_with_a_random_string_session
+# ENTERPRISE_KEY=replace_me_with_a_valid_enterprise_key