Fork of tronprotocol/protocol for Tron Proto sharing within Firehose/Substreams ecosystem

We fork the https://github.com/tronprotocol/protocol because we wanted have a StreamingFast source for depending on Tron protocol protobufs.

This objectives of this repository are:

• Remain binary compatible with Tron protobuf
• Keep the Tron package ID protocol so that Google Any fits
• Rename Go package to points to github.com/streamingfast/tron-protocol/pb
• Publish a shareable and re-usable version of [buf.build/streamingfast/tron-protocol]

The changes we made:

• Replaced option go_package = "github.com/tronprotocol/grpc-gateway/api"; by option go_package = "github.com/streamingfast/tron-protocol/pb/api;pbtronapi";.
• Replaced option go_package = "github.com/tronprotocol/grpc-gateway/core"; by option go_package = "github.com/streamingfast/tron-protocol/pb/core;pbtron";.
• Moved core/contract/*.proto into core/ directly to avoid Go import cycles (and adjusted Proto import directives).
• Removed empty core/tron/*.proto files.
• Generated and commit Go bindings at pb.

Check the original README.md file for details about the project