[release-branch.go1.18] go1.18rc1

Change-Id: I8097771a219c55ceed3e926a238551e59df0816f
Reviewed-on: https://go-review.googlesource.com/c/go/+/386197
Trust: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
diff --git a/VERSION b/VERSION
new file mode 100644
index 0000000..d4dd524
--- /dev/null
+++ b/VERSION
@@ -0,0 +1 @@
+go1.18rc1
\ No newline at end of file