docs: Add doc on writing a SCIP indexer.
Created by: varungandhi-src
Finishing up one of the last main bits for https://github.com/sourcegraph/scip/issues/6.
Make sure to use the Split View for ease of reviewing.
Test plan
n/a
Created by: varungandhi-src
Finishing up one of the last main bits for https://github.com/sourcegraph/scip/issues/6.
Make sure to use the Split View for ease of reviewing.
n/a