Provide a into_nodes() function on a Directory, which consumes self and
returns owned PathComponent and Node.
Use it to provide a proper conversion from Directory to the proto
variant that doesn't clone.
There's no need for the one taking only &Directory, we don't use it
anywhere, and once someone needs that they might as well clone Directory
before converting it.
Update all other users of the `.nodes()` function to use `.into_nodes()`
where applicable, and avoid some more cloning there.
Change-Id: Id4577b9eb173c012e225337458898d3937112bcb
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12218
Tested-by: BuildkiteCI
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: Connor Brewster <cbrewster@hey.com>
21ceef4934