Take advantage of sqlite3_update_hook in testing

[insipx]

In testing parts of our codebase like consent_sync and probably other parts, it could be useful to have a foolproof way to track how many + which intents are in ToPublish/Publish/Deleted

We can take advantage of the sqlite3 https://www.sqlite.org/c3ref/update_hook.html update_hook function in tests to track this easier. it doesn't exist in diesel, so libsqlite3-sys would need to be pulled in, a new connection established based off the db path on the EncryptedMessageStore, and the hook registered. A common binding between webassembly/native can be created

[insipx]

Not really required, was able to accomplish effectively the same with TRIGGER, in #1366