Deprecate contract inspect

[ifropc]

What

Add deprecate notice to contract inspect command

Why

https://github.com/stellar/stellar-cli/issues/1528

We should add deprecate notice first before committing to removing the command

Known limitations

info technically doesn't support xdr-base64-array which inspect does. This shouldn't be an issue once we bring support of XDR streams to our JS tooling (this is already supported by RS tools) Alternatively, we can bring xdr-base64-array to info command