Also renames the pw_software_update proto package to instead
use the canonical pw.software_update. As part of this the
Manifest and UpdateBundle C++ classes were renamed to
ManifestAccessor and UpdateBundleAccessor.
Moves the service.proto to bundled_update.proto and renames the source
files accordingly.
No-Docs-Update-Reason: Module still in early development
Requires: pigweed-internal:15503
Change-Id: I6531ee5772c17331e9c5ce7e16f4b72002656834
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/61960
Commit-Queue: Auto-Submit <auto-submit@pigweed.google.com.iam.gserviceaccount.com>
Reviewed-by: Wyatt Hepler <hepler@google.com>
Reviewed-by: David Rogers <davidrogers@google.com>
Pigweed-Auto-Submit: Ewout van Bekkum <ewout@google.com>
