Contains generic Map and Set types.
Golang 1.18 added new support for generics, but has not yet added a standard library that provides generic containers. In future versions of Golang, there will almost certainly be similar implementations of these types.
Until then, use these to simplify some code.
100% test coverage.
Bug: dawn:1342
Change-Id: I2a5c7bfb26f15c2099037d3fa0f0576df641d9f6
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/85220
Auto-Submit: Ben Clayton <bclayton@google.com>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>