add benchmarking stub using plutus-benchmark

bench/Main.hs

@@ -0,0 +1,25 @@
+module Main (main) where
+
+import Prelude
+
+--------------------------------------------------------------------------------
+
+import Plutarch.Benchmark
+import Plutus.V1.Ledger.Value qualified as Value
+
+--------------------------------------------------------------------------------
+
+import Agora.AuthorityToken qualified as Agora
+
+--------------------------------------------------------------------------------
+
+main :: IO ()
+main = do
+  benchMain benchmarks
+
+benchmarks :: [NamedBenchmark]
+benchmarks =
+  benchGroup
+    "full_scripts"
+    [ bench "authorityTokenPolicy" $ Agora.authorityTokenPolicy (Agora.AuthorityToken (Value.assetClass "" ""))
+    ]