Build and use a local cache of state for wadm

[thomastaylor312]

This is a follow up to #203. Ideally, we should probably just cache all state data locally by watching the NATS kv bucket. This would greatly reduce the amount of lookups directly to the database and the amount of traffic going across NATS. Minimum requirements would be a new implementation of a state store that would send data to NATS KV on write while simultaneously updating the local cache. All other cache stores would receive the update via watching the KV bucket.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. If this has been closed too eagerly, please feel free to tag a maintainer so we can keep working on the issue. Thank you for contributing to wasmCloud!

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. If this has been closed too eagerly, please feel free to tag a maintainer so we can keep working on the issue. Thank you for contributing to wasmCloud!

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. If this has been closed too eagerly, please feel free to tag a maintainer so we can keep working on the issue. Thank you for contributing to wasmCloud!