The output of this script becomes the contents of
`topics/module-api-ref.md` in the `valkey-doc` repo. (Updating it is a
manual process.)
The script uses git tags to find the version that first added an API
function. To preserve the history from old Redis OSS versions, for which
we don't keep git tags, a mapping is stored in a file.
Signed-off-by: Viktor Söderqvist <viktor.soderqvist@est.tech>
