vendor dependencies, make some changes to how input is done

vendor/github.com/ebitengine/purego/dlfcn_nocgo_freebsd.go

@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo
+
+package purego
+
+//go:cgo_import_dynamic purego_dlopen dlopen "libc.so.7"
+//go:cgo_import_dynamic purego_dlsym dlsym "libc.so.7"
+//go:cgo_import_dynamic purego_dlerror dlerror "libc.so.7"
+//go:cgo_import_dynamic purego_dlclose dlclose "libc.so.7"