[FEATURE] Create a page to view an assigned responder

As a reporter, I want to view an assigned responder to my report, including responder’s details, estimated time of arrival (ETA), contact information

**Criteria: Acceptance criteria:** A page to view information about the assigned responder.

**Scenario:** Given the user is awaiting a response to a report, when a responder accepts the report, the user then gets routed to the **Responder assigned page** where details concerning the responder and their ETA is displayed.

No files or tests are named. Start by tracing the existing report-awaiting flow and the route used when a responder accepts a report; identify how responder details, ETA, and contact information are provided. Done means the assigned responder page is reachable after acceptance and displays the specified information.

Written by the indexing model from the issue text.