Make autoninja path also available via depot_tools recipe module,
and make autoninja used where it is needed.

Bug: b/77176746
Change-Id: I8553cb3fb32f98e2e3ff420c255461b7e7da7df6
Reviewed-on: https://chromium-review.googlesource.com/c/1293112Reviewed-by: Fumitoshi Ukai <ukai@chromium.org>
Reviewed-by: Shinya Kawanaka <shinyak@chromium.org>
Reviewed-by: Andrii Shyshkalov <tandrii@chromium.org>
Commit-Queue: Yoshisato Yanagisawa <yyanagisawa@chromium.org>