…6268)

* imp: allow memo strings instead of keys for transfer authorizations

* add changelog

* handle error from compact

* return error

* improve test

* not enforce that memo strings of allowed packet data must be JSON-encoded strings

* use slices contains to check if memo is allowed

* Update modules/apps/transfer/types/transfer_authorization.go

Co-authored-by: srdtrk <59252793+srdtrk@users.noreply.github.com>

* Update modules/apps/transfer/types/transfer_authorization.go

Co-authored-by: srdtrk <59252793+srdtrk@users.noreply.github.com>

* lint

---------

Co-authored-by: srdtrk <59252793+srdtrk@users.noreply.github.com>
(cherry picked from commit 0a22b7a)

# Conflicts:
#	docs/docs/02-apps/01-transfer/08-authorizations.md
#	modules/apps/transfer/types/authz.pb.go
#	modules/apps/transfer/types/keys.go
#	modules/apps/transfer/types/transfer_authorization.go
#	modules/apps/transfer/types/transfer_authorization_test.go
#	proto/ibc/applications/transfer/v1/authz.proto