docs: Update README to address opendal branding (#1)

:memo: :sparkles: add fs demo

:sparkles: update default display configuration

:memo: :hammer: update docs for naming

:construction_worker: :sparkles: upload dl by ci

:tada: init cargo build and test ci

:sparkles: one operator for each input

:art: fix unnecessary warnings temporarily

:sparkles: always add . for relative path

:sparkles: fix print unnecessary dir name

:sparkles: fix current dir show parent path

:fire: clean up unused warnings

:fire: drop unused flags

:sparkles: done list dir and files

:tada: done poc, works for show file