Go WAF Plugin (#400)

plugins/wasm-go/extensions/waf/init_tinygo.go

@@ -0,0 +1,14 @@
+//go:build tinygo
+
+package main
+
+import _ "github.com/wasilibs/nottinygc"
+
+// Compiled by nottinygc for delayed free but Envoy doesn't stub it yet,
+// luckily nottinygc doesn't actually call the function, so it's fine to
+// stub it out.
+
+//export sched_yield
+func sched_yield() int32 {
+	return 0
+}