[Feature] Add a meaningful "deployment_id" or other indicator for the graph-node internal substream

[matthewdarwin]

Description

Add a meaningful "deployment_id" or other indicator for the graph-node internal substream.

The substreams-head-tracker https://github.com/graphprotocol/graph-node/tree/master/substreams/substreams-head-tracker uses an internal spkg. When connecting to substreams provider, there is no clear indication of what this is.

It would make it clearer for debugging to set deployment_id to substreams-head-tracker or something similar.

Are you aware of any blockers that must be resolved before implementing this feature? If so, which? Link to any relevant GitHub issues.

No response

Some information to help us out

• Tick this box if you plan on implementing this feature yourself.
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