feat: add fission_simple_function composite resource

examples/big-suite/code/go-processor/main.go

@@ -0,0 +1,12 @@
+package main
+
+import (
+	"net/http"
+)
+
+// Handler — точка входа для fission go-env.
+func Handler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusOK)
+	_, _ = w.Write([]byte(`{"status":"processed"}`))
+}