Repeated field tests

- match repeated field for positions FIRST, LAST, ANY
- condition on repeated field
- write repeated fields to proto
- Event Metric output for a repeated field atom
- Event Metric matching specific repeated field value, position FIRST
- Count Metric with repeated field atom
- Count Metric matching specific repeated field value, position ALL
- Duration Metric conditioned on a repeated field

Bug: 218696574
Bug: 210677971
Test: atest statsd_test
Ignore-AOSP-First: native StatsEvent APIs not submitted in AOSP
Change-Id: I92aee4e4b6e120851870902cf87ef31a9cbbba9c
8 files changed