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Insights/replace captured values in query

Warren Gifford requested to merge insights/replace-captured-values-in-query into main

Created by: coury-clark

Part of https://github.com/sourcegraph/sourcegraph/issues/40045

Adds support to "reverse engineer" a regexp from it's matches to regenerate new regexp strings that match more specific values. In this case only the first capturing group is eligible for replacement.

For example given a regexp \w{3}(.{3})\w{3} and the text foobardog generate \w{3}(?:bar)\w{3}

This will be used for drilldown when viewing Code Insights that are dynamically generated from a capture group.

A future PR is coming that will more clearly define the interface of how the aggregator client will use this.

Test plan

Tests included and will be tested more once integrated with Sourcegraph queries

Merge request reports