db: Add project_id to EventTag queries and deletes

[bretthoerner]

SELECT side helps Citus, so it doesn't hit all shards.

DELETE side is required or Citus throws and error.

[bretthoerner]

master_1    | ERROR:  cannot run DELETE command which targets multiple shards
master_1    | HINT:  Consider using an equality filter on partition column "project_id" to target a single shard. If you'd like to run a multi-shard operation, use master_modify_multiple_shards().
master_1    | STATEMENT:  DELETE FROM "sentry_eventtag" WHERE "id" IN (2)

Can't do IN across shards either. Deletion code will have to be refactored to allow for one query per project_id. Which sucks, because I think when we delete groups we're just iterating by date? So the project constantly varies. Will be a large refactor I think to get that correct/fast.

Other option: https://docs.citusdata.com/en/v7.0/reference/user_defined_functions.html#master-modify-multiple-shards

[mattrobenolt]

Let's hold off on this. If we end up needing to do anything Citus specific, we can do this in backend.

[mattrobenolt]

Let's punt on this now. Or at least revisit later. Since we can do DELETEs unqualified just fine. If anything, we just should address the SELECT queries.