Josh Lind

### Description ### Test Plan - - - This change is [](https://reviewable.io/reviews/aptos-labs/aptos-core/4154)

> I start a completely new node. I give it the genesis blob to start up for the first time, and I want the waypoint to be at the version...

[State Sync] Small tweaks to configs.

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### Description This PR makes several small tweaks to the default state sync configs: 1. Update the max message size from 12MB to 16MB. This should cover the worst possible...

[Workspace] Upgrade rust and use new workspace inheritance features.

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### Description This PR updates our rust version to 1.64.0. As an added benefit, it also makes use of the new workspace inheritance features to: (i) share workspace package properties...

[Cargo] Add comment about performance profile.

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### Description This PR adds a small comment to the performance profile in Cargo.toml to warn the reader that performance builds are not stable yet. ### Test Plan None. -...

[Testnet Deployments] Support an idle/cheap testnet deployment mode.

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We're spawning up a lot of test networks. When we aren't actively using these testnets, it would be great to run the testnet in an idle state to avoid wasting...

[Testing] Add better test harness for networking code.

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In order to test network services and applications, a lot of our testing code manually wires together endpoints that can send and receive messages. It would be nice to create...

[Networking] Fix inconsistent API in PeerMetadataStorage.

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`PeerMetadataStorage` is the single source of truth for peer information offered to applications by the networking stack. It provides applications with the ability to inspect the state of the peers...

[Network] Network discovery and on-chain registration

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## Problem Today, we have no way of knowing what peers exist in the network and how to connect to them. New addresses (e.g., seeds) must be posted manually online....

[Mode Controller] Support smooth transitions between consensus and state sync

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## Problem When we move to the world of subcommittees, validators will move in and out of active consensus participation. Moreover, fullnodes may become validators (e.g., if they stake enough...