Add needed subcomponents for State initialization

[IvanKavaldzhiev]

Problem

In order to properly initialize the State in hedera-mirror-web3, we should define several components, so that we can migrate the schema definitions and initialize the State with the needed structure.

Solution

Add implementation for the following components:

• NetworkInfo
• SchemaRegistry
• ServiceMigrator

Add unit tests for these components.

Alternatives

No response