[Data] Use data from Trunk to index.

[floere]

• [x] Decide on new data to make searchable (see #51).
• [x] Add child DB table pod_index_data (?) pointing at pods
• [x] Also join in pod_metrics table to get stars etc.
• [x] Add webhook path and trigger index_data updates and reindexing.

[alloy]

\o/