feat(group): add group event tally result (backport #16191)

[mergify]

This is an automatic backport of pull request #16191 done by Mergify.
Cherry-pick of be2003e has failed:

On branch mergify/bp/release/v0.47.x/pr-16191
Your branch is up to date with 'origin/release/v0.47.x'.

You are currently cherry-picking commit be2003e58.
  (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:   api/cosmos/group/v1/events.pulsar.go
	modified:   proto/cosmos/group/v1/events.proto
	modified:   proto/cosmos/group/v1/query.proto
	modified:   x/group/README.md
	modified:   x/group/events.pb.go
	modified:   x/group/keeper/genesis.go

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	both modified:   CHANGELOG.md
	both modified:   api/cosmos/group/v1/types.pulsar.go
	both modified:   proto/cosmos/group/v1/types.proto
	both modified:   x/group/keeper/keeper.go
	both modified:   x/group/keeper/msg_server.go
	deleted by us:   x/group/keeper/msg_server_test.go
	both modified:   x/group/types.pb.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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