Merge pull request #39 from cardano-foundation/feat/is-60-add-aiken-m…

…ithril-client-state

feat: IS-60 Add Mithril ClientState to Cardano on-chain code

cardano/lib/ibc/client/cardano-client/protos/mithril.pb.ak

@@ -0,0 +1,31 @@
+pub type MithrilClientState {
+  chain_id: ByteArray,
+  latest_height: Option<MithrilHeight>,
+  frozen_height: Option<MithrilHeight>,
+  current_epoch: Int,
+  trusting_period: Int,
+  protocol_parameters: Option<MithrilProtocolParameters>,
+  upgrade_path: List<ByteArray>,
+}
+
+pub type MithrilHeight {
+  mithril_height: Int,
+}
+
+pub type MithrilProtocolParameters {
+  k: Int,
+  m: Int,
+  phi_f: Int,
+}
+
+pub type AnyMithrilClientState {
+  type_url: ByteArray,
+  value: Option<MithrilClientState>,
+}
+
+pub fn marshal_for_any_client_state(
+  _amcs_opt: Option<AnyMithrilClientState>,
+) -> ByteArray {
+  // TODO: add marshal logic
+  ""
+}