Add an external API to Lumper

[sameo]

Could be HTTP (preferred) or gRPC based.

[charley-geoffroy]

Proposal for more granular issues

1. Boostrap rust API (choose a framework) - Create a basic "Hello World" API using a Rust web framework such as Rocket. Implement basic error handling to ensure that appropriate error messages are returned to the user.
2. Set up CI - Set up continuous integration for the API using a tool such as GitHub Actions.
3. Create Proto folder and all .proto files needed (models, services) - Create a "proto" folder in the project directory and add all necessary .proto files for defining the API's data models and services.
4. Add proto build into External API - Add the necessary build steps to compile the .proto files into Rust code that can be used by the API.
5. Add API endpoint : Configuration - Implement the "configure" API endpoint, which will accept a configuration message in Protobuf format and set the language, variables/inputs, code, and log level for the agent.
6. Add API endpoint : Run - Implement the "run" API endpoint, which will accept a run message in Protobuf format and start the code in a new container instance. The endpoint should return the container ID.
7. Add API endpoint : Shutdown command - Implement the "shutdown" API endpoint, which will accept a shutdown message in Protobuf format and gracefully terminate a specific container instance.
8. Add API endpoint : Logs - Implement the "logs" API endpoint, which will accept a logs message in Protobuf format and retrieve logs for a specific container instance.
9. Add API endpoint : Metrics - Implement the "metrics" API endpoint, which will accept a metrics message in Protobuf format and retrieve metrics such as execution time and memory usage for a specific container instance.
10. Create documentation - Create comprehensive documentation for the API, including examples and explanations of each endpoint and its parameters. The documentation should also include instructions for setting up and using the API.

Note: Every endpoint integration must implement protobuf serialization and deserialization