This enables the logger flags (`--combined`, `--missing-on-src`
etc.) for the `rclone copy` and `move` commands (as well as their
`copyto` and `moveto` variants) akin to `rclone sync`. Warnings for
unsupported/wonky flag combinations are also printed, e.g. when the
destination is not traversed but `--dest-after` is specified.
- fs/operations: add reusable methods for operation logging
- cmd/sync: use reusable methods for implementing logging in sync command
- cmd: implement logging for copy/copyto/move/moveto commands
- fs/operations/operationsflags: warn about logs in conjunction with --no-traverse
- cmd: add logger docs to copy and move commands
Fixes#8115