feat(tvix/store/utils): detect gRPC NAR calculation service r/8295

We were currently always using SimpleRenderer, which would mean the
client would download every blob locally to calculate the checksum,
which of course is very slow.

Detect this special case and create a second instance (and client) for
now.

Change-Id: If39a862a5311e71c8073ac4e663f6c5dd437072e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11848
Reviewed-by: Simon Hauser <simon.hauser@helsinki-systems.de>
Tested-by: BuildkiteCI

0 files changed, 0 insertions, 0 deletions