[ref] core: externalize cli app definition

.gitlab-ci.yml

Cargo.lock

bin/durs-server/Cargo.toml

bin/durs-server/src/cli.rs

bin/durs-server/src/main.rs

lib/core/conf/src/keys.rs

lib/core/conf/src/lib.rs

lib/core/core/Cargo.toml

lib/core/core/src/change_conf.rs

lib/core/core/src/commands/dbex.rs

lib/core/core/src/commands/keys.rs

lib/core/core/src/commands/mod.rs

lib/core/core/src/commands/modules.rs

lib/core/core/src/commands/reset.rs

lib/core/core/src/commands/start.rs

lib/core/core/src/constants.rs

lib/core/core/src/errors.rs

lib/core/core/src/lib.rs

lib/core/core/src/logger.rs

lib/core/core/src/router.rs