OIDC service fields

[Eriikah]

In the same manner as #16, please check the fields that must be put in the openId connect issuer dashboard, the other will be accessible in an advanced panel.

• [x] Issuer identifier
• [ ] Endpoints
• [ ] Authentication context
• Dynamic registration
  • [X] Activation
  • [X] Exported vars
  • [X] Extra claims
• Security
  • Keys
  • [x] Signature keys
  • [ ] Encryption keys
  • Flows
  • [X] Authorization Code Flow
  • [X] Implicit Flow
  • [X] Hybrid Flow
  • [ ] Always send exported attributes
  • [ ] Only allow declared scopes
  • [ ] Drop CSP headers from OIDC responses
  • [ ] Default "alg" algorithm for JWE encryption
  • [ ] Default "enc" algorithm for JWE encryption
  • [ ] Don't display metadata
• Timeouts
  • [X] Authorization Codes
  • [X] ID Tokens
  • [X] Access Tokens
  • [X] Offline sessions
• Sessions
  • [X] Sessions module name
  • [X] Sessions module options
• [ ] Download metadata button