feat: add authz support for ics20 (backport #3079)

[mergify]

This is an automatic backport of pull request #3079 done by Mergify.
Cherry-pick of 6c008ea has failed:

On branch mergify/bp/release/v6.2.x/pr-3079
Your branch is up to date with 'origin/release/v6.2.x'.

You are currently cherry-picking commit 6c008ea2.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   docs/ibc/proto-docs.md
	new file:   e2e/tests/transfer/authz_test.go
	deleted:    modules/apps/transfer/types/ack_test.go
	new file:   modules/apps/transfer/types/authz.pb.go
	modified:   modules/apps/transfer/types/errors.go
	new file:   modules/apps/transfer/types/transfer_authorization.go
	new file:   modules/apps/transfer/types/transfer_authorization_test.go
	new file:   proto/ibc/applications/transfer/v1/authz.proto

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	deleted by us:   .github/workflows/e2e-manual-simd.yaml
	deleted by us:   e2e/testconfig/testconfig.go
	deleted by us:   e2e/testsuite/codec.go
	deleted by us:   e2e/testsuite/testsuite.go
	deleted by us:   e2e/testvalues/values.go
	both modified:   go.mod
	both modified:   modules/apps/transfer/types/codec.go
	both modified:   modules/apps/transfer/types/types_test.go

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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