Go tooling does not work properly when modifying go files in subdirectories from the root of the IDE.
Consolidate the two go modules in the source tree.
We'll eventually want to move `src/dawn/node/tools` to `tools/src`.
Allows us to type `go test ./...` at the root, and test all go code in
the entire repo.
Bug: dawn:1342
Change-Id: Ie3dd2c89a769cd25c2b68884970ef0f2ba8c7560
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/86532
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Ben Clayton