vendor raymenu dependencies

raymenu/vendor/github.com/ebitengine/purego/cgo.go

@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build cgo && (darwin || freebsd || linux || netbsd)
+
+package purego
+
+// if CGO_ENABLED=1 import the Cgo runtime to ensure that it is set up properly.
+// This is required since some frameworks need TLS setup the C way which Go doesn't do.
+// We currently don't support ios in fakecgo mode so force Cgo or fail.
+// Even if CGO_ENABLED=1 the Cgo runtime is not imported unless `import "C"` is used,
+// which will import this package automatically. Normally this isn't an issue since it
+// usually isn't possible to call into C without using that import. However, with purego
+// it is since we don't use `import "C"`!
+import (
+	_ "runtime/cgo"
+
+	_ "github.com/ebitengine/purego/internal/cgo"
+)