We should have a clear place where metrics we use are defined, so people know what exists and what they are about
- Create a file called metrics.md in the docs folder of the AdvancedSearch extension.
- Describe all metrics that exist for Advanced Search.
T173572: Add code for tracking the usage of keywords and the overall usage of the extension introduces the metrics into the code
A sample metrics.md file can be found in the TwoColConflict extension: https://gerrit.wikimedia.org/r/#/c/406813/2/docs/metrics.md
Schema is in https://meta.wikimedia.org/wiki/Schema:AdvancedSearchRequest. Are these related? Are there synergies?