Add gRPC query for WASM params

[minxylynx]

Params are present in the WASM module, but there is no way to query for them, either via CLI or gRPC.

Would be very helpful to have this ability

[ethanfrey]

Isn't there a generic params query? (in 0.45)
Can you link to another module specific params query that shows the desired behavior?

[minxylynx]

https://github.com/cosmos/cosmos-sdk/blob/main/proto/cosmos/staking/v1beta1/query.proto#L90-L93

[jhernandezb]

You can already do this through the params module

wasmd q params subspace wasm uploadAccess
wasmd q params subspace wasm instantiateAccess

This requires you to know each param key which the only way is by reading the code https://github.com/CosmWasm/wasmd/blob/main/x/wasm/types/params.go#L16

I agree that other modules provide a more convenient way to retrieve all at once without having to know each ParamKey

a wasmd q wasm params could be helpful

[minxylynx]

As there is movement to deprecate the params module, adding a query for params directly makes most sense.