Inji 360 Support different host for mimoto and esignet (#829)

* feat(INJI-360): Add esignet host as env variable and use in QR login flow.

* feat(INJI-360): Fix compile error.

* chore(INJI-360): support esignet and mimoto base url in workflows for Android and iOS

* chore(INJI-360): add ESIGNET_HOST in Fastfile for android.

* chore(INJI-360): remove unnecessary env variables from ios build workflow.

types/react-native-dotenv/index.d.ts

@@ -4,6 +4,11 @@ declare module 'react-native-dotenv' {
    */
   export const MIMOTO_HOST: string;
 
+  /**
+   * URL for the Esignet backend server
+   */
+  export const ESIGNET_HOST: string;
+
   /**
    * API key to use Google Nearby Messages API
    */