Extend autotest to cover all UART commands except OTA upload.

Add led_ring, find_me, restart, and ota_progress steps plus uart_cmds scenario.

Co-authored-by: Cursor <cursoragent@cursor.com>

goTool/autotest/scenario.go

@@ -45,6 +45,14 @@ type Expect struct {
 
 	// unicast_test
 	Seq *uint32 `json:"seq,omitempty"`
+
+	// led_ring
+	Mode     *uint32 `json:"mode,omitempty"`
+	Progress *uint32 `json:"progress,omitempty"`
+	Digit    *uint32 `json:"digit,omitempty"`
+
+	// ota_slave_progress
+	Active *bool `json:"active,omitempty"`
 }
 
 func LoadScenario(path string) (*Scenario, error) {