New parameter: pruneBackoff and unsubcribeBackoff

[twoeths]

trafficstars

Motivation

• Right now we have backoff time as a constant of 1 minute

export const GossipsubPruneBackoff = minute

• Lodestar wants to specifies its own backoff time when it unsubscribes from a topic
• Refer to nim's implementation https://github.com/status-im/nim-libp2p/pull/665

Description

• Support unsubscribeBackoff param when we unsubscribe from a topic, default to some seconds
• Support pruneBackoff param for other scenarios, default to 1 minute

[stale[bot]]

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[twoeths]

unstale