Separate import statements by type

[seantking]

Summary

Following on from the comment suggesting to update import statements.

For example, the imports here should be refactored to look like:

import (
        // standard library imports
	"fmt"
	"testing"
        
        // external library imports
	"github.com/stretchr/testify/require"
	abci "github.com/tendermint/tendermint/abci/types"
        
         // ibc-go library imports
	"github.com/cosmos/ibc-go/modules/core/23-commitment/types"
)

This needs to be done throughout most of the repo.

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[nickmancari]

I can do this, I'd love to help out.

[crodriguezvega]

Hi @nickmancari. Are you still willing to work on this? No problem if you can't!