Add initial nistec project files

p256_ordinv_noasm.go

@@ -0,0 +1,13 @@
+// Copyright 2022 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build (!amd64 && !arm64) || purego
+
+package nistec
+
+import "errors"
+
+func p256OrdInverse(k []byte) ([]byte, error) {
+	return nil, errors.New("unimplemented")
+}