feat: add CIE authentication callback page with polling mechanism for session verification

app/types/api.d.ts

@@ -54,6 +54,41 @@ export interface TokenResponse {
     expires_in_hours: number;
 }
 
+export interface CieStartRequest {
+    frontend_redirect_uri: string;
+}
+
+export interface CieStartResponse {
+    ok: boolean;
+    authorization_url: string;
+    state: string;
+    status: string;
+}
+
+export interface CieExchangeRequest {
+    state: string;
+    issuer: string;
+    subject: string;
+    fiscal_code: string;
+    first_name?: string;
+    last_name?: string;
+    email?: string;
+}
+
+export interface CieSessionAuth {
+    token?: string;
+    token_type?: string;
+    expires_in_hours?: number;
+    [key: string]: any;
+}
+
+export interface CieSessionResponse {
+    ok: boolean;
+    status: string;
+    user_id?: number;
+    auth?: CieSessionAuth;
+}
+
 /**
  * REPORTS & MEDIA
  */