install go2rtc on bob

installs_on_host/go2rtc/internal/v4l2/v4l2.go

@@ -0,0 +1,7 @@
+//go:build !(linux && (386 || arm || mipsle || amd64 || arm64))
+
+package v4l2
+
+func Init() {
+	// not supported
+}