Blockchain service

[stwiname]

Description

This is another phase of moving more code to node core, it is a shift away from using super classes and now defines a clear interface for blockchain specific code.

This reduces a lot of boiler plate in extending classes and having to redefine constructors as well as nestjs modules. This will greatly simplify adding support for new blockchains.

TODOs

• [ ] Test all sub commands and dependency injection
  • [ ] Fix runtime service circular dependency with dictionary service
• [ ] Test various flags, workers, unfinalized, mostly runtime service and workers
  • [ ] Test runtime service is syncing between services
• [ ] Test with another SDK to check flexibility(no runtime service, custom unfinalized blocks class)
• [ ] Document this interface so that there is a guide for adding new blockchains
• [x] Remove fetch service from node (remove initBlockDispatcher, preLoopHook)
• [x] Move tests to node core

Type of change

Please delete options that are not relevant.

• [x] New feature (non-breaking change which adds functionality)

Checklist

• [ ] I have tested locally
• [ ] I have performed a self review of my changes
• [ ] Updated any relevant documentation
• [ ] Linked to any relevant issues
• [ ] I have added tests relevant to my changes
• [ ] Any dependent changes have been merged and published in downstream modules
• [ ] My code is up to date with the base branch
• [ ] I have updated relevant changelogs. We suggest using chan