abci::CheckTx equivalent for IBC module (informalsystems#1203)

* Impl TryFrom<Any> for Ics26Envelope

* Add decode()

* Use decode() in deliver()

* Update CHANGELOG.md

Co-authored-by: Adi Seredinschi <adi@informal.systems>

CHANGELOG.md

@@ -6,6 +6,7 @@
 
 - [ibc]
   - Enable `pub` access to verification methods of ICS 03 & 04 ([#1198])
+  - Add `ics26_routing::handler::decode` function ([#1194])
 
 - [ibc-relayer-cli]
   - Added `upgrade-clients` CLI ([#763])
@@ -28,9 +29,11 @@
 [#1094]: https://github.com/informalsystems/ibc-rs/issues/1094
 [#1114]: https://github.com/informalsystems/ibc-rs/issues/1114
 [#1192]: https://github.com/informalsystems/ibc-rs/issues/1192
+[#1194]: https://github.com/informalsystems/ibc-rs/issues/1194
 [#1198]: https://github.com/informalsystems/ibc-rs/issues/1198
 [#1200]: https://github.com/informalsystems/ibc-rs/issues/1200
 
+
 ## v0.6.0
 *July 12th, 2021*