Add Buildkite analytics integration

[arnavgarg1]

TODO: Condition to only run on merge to master, otherwise it'll get too noisy.

[github-actions[bot]]

Unit Test Results

    6 files  ±    0      6 suites  ±0   1h 31m 6s :stopwatch: + 1h 10m 40s 180 tests +168  151 :heavy_check_mark: +141  29 :zzz: +27  0 :x: ±0  220 runs  +160  183 :heavy_check_mark: +135  37 :zzz: +25  0 :x: ±0 

Results for commit 944d1d68. ± Comparison against base commit 7d959f7e.