feat: add token IDs, store tokens in db for early invalidation

scripts/migrate/003_add_tokens.sql

@@ -0,0 +1,15 @@
+-- +migrate Up
+
+-- 2022-12-23: Add database-backed tokens
+create table tokens (
+    user_id     text not null references users (id) on delete cascade,
+    token_id    text primary key,
+    invalidated boolean not null default false,
+    created     timestamptz not null default now(),
+    expires     timestamptz not null
+);
+
+-- Unrelatedly, this migration also changes the column type for invites.created to timestamptz (from plain timestamp)
+-- This does not change anything code-wise, but it's recommended over plain timestamp because plain timestamp does not handle timezones correctly
+alter table invites alter column created type timestamptz;
+alter table invites alter column created set default now();