Add digests to download targets

This updates the definition of download targets within a manifest to
include a `digest` field, specifying what checksum should be calculated
on the downloaded file.

Change-Id: Ic3139f389ef47ab69c390b5b4729d6641e7970b8
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/qg/+/126212
Commit-Queue: Alexei Frolov <frolv@google.com>
Reviewed-by: Erik Gilling <konkers@google.com>
5 files changed
tree: b021c1378b93a11d01feb253275bb26d8839df7f
  1. examples/
  2. qg/
  3. qg-cli/
  4. tools/
  5. .gitignore
  6. Cargo.toml
  7. rustfmt.toml