fix: improvements for login and oidc (#227)

* add csrf

* caching

* caching

* caching

* caching

* security headers

* csp and security headers

* error handler csp

* select user with display name

* csp

* user selection styling

* username to loginname

* regenerate grpc

* regenerate

* change to login name

internal/auth_request/model/next_step.go

@@ -43,7 +43,8 @@ func (s *SelectUserStep) Type() NextStepType {
 
 type UserSelection struct {
 	UserID           string
-	UserName         string
+	DisplayName      string
+	LoginName        string
 	UserSessionState UserSessionState
 }