feat: Add tx encode and decode endpoints for amino txs

CHANGELOG.md

@@ -58,10 +58,13 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Improvements
 
+* [13882] (https://github.com/cosmos/cosmos-sdk/pull/13882) Add tx `encode` and `decode` endpoints to amino tx service.
+  > Note: These endpoints encodes and decodes only amino txs.
 * (config) [#13894](https://github.com/cosmos/cosmos-sdk/pull/13894) Support state streaming configuration in `app.toml` template and default configuration.
 * (x/nft) [#13836](https://github.com/cosmos/cosmos-sdk/pull/13836) Remove the validation for `classID` and `nftID` from the NFT module.
 * [#13789](https://github.com/cosmos/cosmos-sdk/pull/13789) Add tx `encode` and `decode` endpoints to tx service.
-  > Note: This endpoint will only encode proto messages, Amino encoding is not supported.
+  > Note: These endpoints will only encode and decode proto messages, Amino encoding and decoding is not supported.
+* [#13826](https://github.com/cosmos/cosmos-sdk/pull/13826) Support custom `GasConfig` configuration for applications.
 * [#13619](https://github.com/cosmos/cosmos-sdk/pull/13619) Add new function called LogDeferred to report errors in defers. Use the function in x/bank files.
 * (tools) [#13603](https://github.com/cosmos/cosmos-sdk/pull/13603) Rename cosmovisor package name to `cosmossdk.io/tools/cosmovisor`. The new tool directory contains Cosmos SDK tools.
 * (deps) [#13397](https://github.com/cosmos/cosmos-sdk/pull/13397) Bump Go version minimum requirement to `1.19`.