Shared Resources for ZKsync Node Framework

This library contains resources shared among multiple components in the ZKsync node.

Developer notes

This library should contain the following resources:

• Resources that don't have a clear component crate to place into (e.g., contract data resources).
• Resources that may have a component crate, but placing them there would introduce unreasonable tight coupling between component crates. As an example, the node sync state could be placed in the zksync_node_sync crate, but it would mean that the API server component would need to rely on it, and there would be cyclical dependency between zksync_node_sync and the state keeper.

Resources in the library should not bring heavyweight dependencies (roughly speaking, anything not already brought by the node framework).