Fix various typos found via `codespell -q 3 -S vendor -L pullrequest,pullrequests`
* Refactor: move cncd/pipeline/ to pipeline/ * Refactor: move pipeline/pipeline/ to pipeline/
* move api code to server/api * move grpc server for agent communication to server/grpc * move server.Config to server/config.go as it is used by both server/api and server/grpc * move shared code used by server/api and server/grpc to server/shared