merge #74; add sample and spec of the governor

agora-test/Spec.hs

@@ -13,6 +13,7 @@ import Spec.Model.MultiSig qualified as MultiSig
 import Spec.Proposal qualified as Proposal
 import Spec.Stake qualified as Stake
 import Spec.Treasury qualified as Treasury
+import Spec.Utils qualified as Utils
 
 -- | The Agora test suite.
 main :: IO ()
@@ -44,6 +45,9 @@ main =
       , testGroup
           "Governor tests"
           Governor.tests
+      , testGroup
+          "Utility functions tests"
+          Utils.tests
       , testGroup
           "Multisig tests"
           [ testGroup