Substrate-interface

Scalecodec version bump
Added Gitlab CI config

Added MetadataV11; bumped version of scalecodec

- Updated requirements
- Added debug messages
- Added Dogpile cache_region as a central store for the metadata cache

- Separation of concerns with Py-Scale-Codec
- Separation of concerns with Substrate-Interface-Api
- Updated documentation
- Added unit tests
- Compose call features
- Metadata integrations
- Context awareness of metadata
- Type registry versioning
- Full Scale-Codec support (encode/decode)