Make overseer handle optional in RPC client #14
Merged
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It seems that the overseer handle from polkadot is related to collation and is obtained by starting an embeded relay chain node. However for RPC providers connecting to a Tanssi node through websockets there is no embeded relay chain node and thus no overseer handle available.
This PR makes the overseer handle optional in the RPC orchestrator interface implementation so that it can be provided or not depending on the needs. Trying to get the overseer handle if there is none will return an error.