Build epoch in info, flash-status command, cmake version embedding

lib/client/client.go

@@ -132,6 +132,10 @@ func (c *Client) Reboot() error {
 	return err
 }
 
+func (c *Client) FlashStatus() (*ResponseFlashStatus, error) {
+	return first(roundTrip[ResponseFlashStatus](c, &RequestFlashStatus{}))
+}
+
 func (c *Client) ListTests() (*ResponseListTests, error) {
 	return first(roundTrip[ResponseListTests](c, &RequestListTests{}))
 }