Geyser Plugin v0.3.1

- Enabled transaction notifications
- Switched from `smol` to `tokio` for async tasks
- Performance improvements for account and transaction updates
- Metrics now use `solana_metrics` counters
- Stricter, less confusing config JSON schema

Merge pull request #364 from holaplex/dev

Release refactors and updated doc triggers.

updated plugin with logging and restart logic

Partial revert of accountsdb plugin refactor. (#167)

legacy master deployment