gRPC wasm Clients

NOTE: This might not strongly related to telescope.

Currently, most of web apps have to use Javascript/Typescript to connect with light client server, since most web explorers don’t support gRPC and http2.

It's very useful to build a gRPC client with Web assembly and http2. Once it is built, developers can easily invoke gRPC services underlying the Rest services. and it is smaller, faster, laser resources consumed.

With Telescope, This could be much earlier.

## List all services
```
% ./grpcurl grpc-osmosis-ia.notional.ventures:443 list
bech32ibc.bech32ibc.v1beta1.Query
cosmos.auth.v1beta1.Query
cosmos.authz.v1beta1.Query
cosmos.bank.v1beta1.Query
cosmos.base.reflection.v1beta1.ReflectionService
cosmos.base.reflection.v2alpha1.ReflectionService
cosmos.base.tendermint.v1beta1.Service
cosmos.distribution.v1beta1.Query
cosmos.evidence.v1beta1.Query
cosmos.gov.v1beta1.Query
cosmos.params.v1beta1.Query
cosmos.slashing.v1beta1.Query
cosmos.staking.v1beta1.Query
cosmos.tx.v1beta1.Service
cosmos.upgrade.v1beta1.Query
cosmwasm.wasm.v1.Query
grpc.reflection.v1alpha.ServerReflection
ibc.applications.transfer.v1.Query
ibc.core.channel.v1.Query
ibc.core.client.v1.Query
ibc.core.connection.v1.Query
ibc.core.port.v1.Query
osmosis.claim.v1beta1.Query
osmosis.epochs.v1beta1.Query
osmosis.gamm.v1beta1.Query
osmosis.incentives.Query
osmosis.lockup.Query
osmosis.mint.v1beta1.Query
osmosis.poolincentives.v1beta1.Query
osmosis.superfluid.Query
osmosis.txfees.v1beta1.Query
testdata.Query
```
## List Methods of a service:
```
% ./grpcurl grpc-osmosis-ia.notional.ventures:443 list cosmos.base.tendermint.v1beta1.Service
cosmos.base.tendermint.v1beta1.Service.GetBlockByHeight
cosmos.base.tendermint.v1beta1.Service.GetLatestBlock
cosmos.base.tendermint.v1beta1.Service.GetLatestValidatorSet
cosmos.base.tendermint.v1beta1.Service.GetNodeInfo
cosmos.base.tendermint.v1beta1.Service.GetSyncing
cosmos.base.tendermint.v1beta1.Service.GetValidatorSetByHeight
```

## invoke gRPC calls:

Call `cosmos.base.tendermint.v1beta1.Service.GetLatestBlock` return proto message.

Therefore, We can call all services directly via gRPC