* [clsi] add stats and timings to compile response from clsi-cache
* [clsi] set downloadedFromCache when previously downloaded for synctex
Assumption: every compile will emit an output.log. When the output.log
is missing, but the output.synctex.gz exists, it must have been
downloaded from the cache.
GitOrigin-RevId: 41ea34880931e3c43dda3bc9eb26c0d02054894d
Andrew Rumble