* Add API for dashboard to get boards list by platform * Dashboard API: add board list for ESP32 S2/S3/C3 * Dashboard API: remove endpoint for all boards * Dashboard API: hide group titles for all platforms * Dashboard API: fix Python lint * Dashboard API: refactor /boards to use list output * Dashboard API: filter boards for selected platform * Dashboard API: do not duplicate esp32 boards Co-authored-by: Paulus Schoutsen <paulus@home-assistant.io> Co-authored-by: Paulus Schoutsen <paulus@home-assistant.io>