[FEATURE]: Add support for tRPC (new automated API for Dgraph)

[MichelDiz]

Use case

tRPC is a transport layer for Remote Procedure Calls (RPCs) just like used by gRPC. tRPC provides a fast, low overhead, and scalable way to transmit data between services.

Examples of use cases for tRPC are:

• Microservice communication
• Distributed system communication
• Inter-process communication
• High-performance data processing
• Service-to-service authentication and authorization
• Remote database access
• Remote machine learning model serving
• and many more.

How we would use tRPC with Dgraph?

tRPC can be utilized with Dgraph to create an automated CRUD system, similar to what we already have with GraphQL. tRPC would provide a new API option for users. The tRPC resolver generator would be based on Dgraph's Type System, generating all tRPC queries and mutations. Interoperability between GraphQL and tRPC may be possible in the future, but it may be better to keep tRPC solely for DQL and have GraphQL in its own separate space

Links to Discuss, RFC or previous Issues and PRs

No response

Links to examples and research

No response

Current state

No response

Solution proposal

Add tRPC to Dgraph stack.

Additional Information

Once we have a node-based Type System, tRPC would be trivial to implement. See https://discuss.dgraph.io/t/rfc-proposal-for-change-in-type-system/17983

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