Zachary Anderson 32e67cfe77 Further shard clang-tidy runs (flutter/engine#43428)
The clang-tidy shards have crept up to 60 minutes on some runs. This PR
will bring them back down to around 30 minutes.

It does this by sharding the work for Mac/Linux `host_debug` across 4
shards. The clang-tidy work for ios/Android remains constrained to one
shard. Unfortunately, the clang-tidy script sharding isn't smart enough
to allow the ios/Android shards to participate in the `host_debug`
sharding. This PR leaves that shard as-is, but we could further improve
the runtime there if needed.
2023-07-06 08:56:20 -07:00
..