Fix panics in packet queries (informalsystems#554)

* Fix for informalsystems#521. Will fix the unwraps for QueryUnreceivedAcknowledgementCmd also

* Added the 'required' annotation to packet queries.

When a free option (such as a chain_id or port_id) in a command
is tagged with the 'required' attribute, this will safeguard against
invoking the command with `default()` values for the corresponding
option.

* Updated the changelog

* Apply suggestions from code review

Co-authored-by: Anca Zamfir <ancazamfir@users.noreply.github.com>

* FMT fix

Co-authored-by: Anca Zamfir <ancazamfir@users.noreply.github.com>

CHANGELOG.md

@@ -21,7 +21,7 @@
 - [relayer-cli]
   - Replace `ChannelConfig` in `Channel::new` ([#511])
   - Add `packet-send` CLI ([#470])
-  - UX improvements for relayer txs ([#536, #540])
+  - UX improvements for relayer txs ([#536, #540, #554])
 
 - [relayer]
   - Performance improvements ([#514], [#537])
@@ -59,6 +59,7 @@
 [#536]: https://github.com/informalsystems/ibc-rs/issues/536
 [#537]: https://github.com/informalsystems/ibc-rs/issues/537
 [#540]: https://github.com/informalsystems/ibc-rs/issues/540
+[#554]: https://github.com/informalsystems/ibc-rs/issues/554
 
 
 ## v0.0.6

relayer-cli/src/commands/query.rs

@@ -11,19 +11,19 @@ mod packet;
 #[derive(Command, Debug, Options, Runnable)]
 pub enum QueryCmd {
     /// The `query client` subcommand
-    #[options(help = "query client")]
+    #[options(help = "query information about client(s)")]
     Client(QueryClientCmds),
 
     /// The `query connection` subcommand
-    #[options(help = "query connection")]
+    #[options(help = "query information about connection(s)")]
     Connection(QueryConnectionCmds),
 
     /// The `query channel` subcommand
-    #[options(help = "query channel")]
+    #[options(help = "query information about channel(s)")]
     Channel(QueryChannelCmds),
 
     /// The `query packet` subcommand
-    #[options(help = "query packets")]
+    #[options(help = "query information about packet(s)")]
     Packet(QueryPacketCmds),
 }