misc/wasm: add wasip1/wasm exec script

This script uses Wazero, the open source, zero dependencies
pure Go Wasm and WASI runtime. This is the runtime that allows
the greatest number of standard library tests to pass.

For #58141

Co-authored-by: Richard Musiol <neelance@gmail.com>
Co-authored-by: Achille Roussel <achille.roussel@gmail.com>
Co-authored-by: Julien Fabre <ju.pryz@gmail.com>
Co-authored-by: Evan Phoenix <evan@phx.io>
Change-Id: I789465ae4daf2b380f3c05a9365b8d449c6af56c
Reviewed-on: https://go-review.googlesource.com/c/go/+/479620
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>

diff --git a/misc/wasm/go_wasip1_wasm_exec b/misc/wasm/go_wasip1_wasm_exec
new file mode 100755 (executable)
index 0000000..37cba72
--- /dev/null
+++ b/misc/wasm/go_wasip1_wasm_exec
@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+# Copyright 2023 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.
+
+exec wazero run -mount /:/ -env-inherit -cachedir "${TMPDIR}"/wazero $1 "${@:2}"