[LB-Next] Assess amount of work to convert existing LB3 connector to TypeScript

[dhmlau]

Assess how much work to convert existing connectors to TypeScript. Similar to the MySQL connector interface done in strongloop/loopback4-example-microservices#51.
It includes functions like search, findById, etc.

Acceptance Criteria

• Build MySQL connector (use this as an example, seems like there're existing code we can reference)
• Create (reuse) tests
• List out the work items need to be done for this "conversion"

Note: feel free to edit accordingly. Possibly needs grooming.

Coming from discussion with @raymondfeng

BLOCKED BY

• Do we want a new Juggler? #537

[bajtos]

I think rewrite of connectors to TypeScript is pretty low priority compared to all other GA (and postGA) related tasks we have in front of us. I am closing this issue as not relevant for now.