Refactor: Rename NanoKVM to BatchuKVM and update server URL

server/proto/hid.go

@@ -0,0 +1,9 @@
+package proto
+
+type GetHidModeRsp struct {
+	Mode string `json:"mode"` // normal or hid-only
+}
+
+type SetHidModeReq struct {
+	Mode string `validate:"required"` // normal or hid-only
+}