refactor to extract common package features to move to new repo

common/context.go

common/dawn_errors.go

common/logger.go

config/error_codes.go

config/routes.go

controllers/data_download_controller.go

controllers/gdd_controller.go

controllers/misc_controller.go

controllers/routes.go

controllers/seed_controllers.go

main.go

models/confidence_interval.go

models/csv.go

models/enums/product_type.go

models/freezing_dates.go

models/gdd.go

models/seeds.go

persistence/mongodb.go

services/data_download_service.go

services/freezing_date_service.go