feat: Modify grpc gateway to be concurrent

[Thunnini]

Current grpc happens to be concurrent, while the grpc gateway itself is not, since it always uses abci query. Therefore, as the current queries are not concurrent, throughput has the room for improvement. This PR changes the grpc gateway so that when server is ran by a node daemon, it directly calls grpc to make queries concurrent. Any services that uses grpc gateway could improve throughput by fundamental amount, which has been tested and ensured in the process of running an Osmosis node using the current chagnes.

The code base has the following changes:

• GRPCClient field has been added to Client Context.
• The Invoke method in Client Context would use ABCI query when GRPCClient field is set to nil, otherwise use the GRPC Client to return results that have used grpc.
• If GRPC is set to enable in startInProcess, it sets the GRPC Client field in Client Context.

[tac0turtle]

utACK.

[fdymylja]

Let's implement this as a:

switch ctx.GRPCClient {
case nil:
   abci query
default:
    grpc query   
}

This makes code more readable.

[tac0turtle]

@Thunnini any chance you can update the code and then we can get this merged?

[alexanderbez]

Love it.

[alexanderbez]

Suggested change

	"google.golang.org/grpc"
	"google.golang.org/grpc"

[Thunnini]

@marbar3778 Srry things got delayed, I was out bc of covid 😥 Updated reflecting the reviews!

• Modified so that grpcClient only connects through 127.0.0.1
• use grpc.WithTransportCredential(insecure.NewCredentials()) instead of grpc.WithInsecure() (deprecated)
• add clientCtx.InterfaceRegistry to grpcClient call options using grpc.ForceCodec

[tac0turtle]

@Mergifyio backport release/v0.45.x

[mergify]

backport release/v0.45.x

✅ Backports have been created

• #11536 feat: Modify grpc gateway to be concurrent (backport #11234) has been created for branch release/v0.45.x