Query validator by address

[Matthews3301]

Is your feature request related to a problem? Please describe.
I would like to query validator by address only rather than launchID + address. This is to be used in Ignite front-end.

In https://github.com/tendermint/spn/blob/develop/proto/launch/query.proto you can find

// Queries a genesisValidator by index.
rpc GenesisValidator(QueryGetGenesisValidatorRequest) returns (QueryGetGenesisValidatorResponse) {
  option (google.api.http).get = "/tendermint/spn/launch/genesis_validator/{launchID}/{address}";
}

Describe the solution you'd like
Would it be possible to also add something like this:

// Queries a genesisValidator by address.
rpc GenesisValidator(QueryGetGenesisValidatorRequest) returns (QueryGetGenesisValidatorResponse) {
  option (google.api.http).get = "/tendermint/spn/launch/genesis_validator/{address}";
}

This would return an array since sometimes a validator is present in multiple launches.

Describe alternatives you've considered
Tried querying RPC directly, however this is not possible.

[fadeev]

Since this is not critical for the UI, let's postpone this.

[fadeev]

Right now, we can query for all the "add validator" requests with the following query:

https://api.nightly.starport.network/cosmos/tx/v1beta1/txs?events=message.action=%27request_add_validator%27

This, however, only shows requests for all validators.

What we need instead is:

• events to filter all "add validator" request of a particular validator that were approved
• events to filter all "remove validator" request of a particular validator that were approved

Most likely this is going to use txs?events=message.action="settle_request" and we need to add something.validator_address="spn***" and something.request_status="approved".

In any case, what this should allow us to do is fetch all approved add validator requests from a particular validator and remove the approved remove validator requests.

[lumtis]

Closing as it should be solved by the backend solution