refactor: rework oidc session storage

internal/assets/migrations/postgres/000002_oidc_rework.up.sql

@@ -0,0 +1,28 @@
+/*
+This migration will nuke the entire setup of OIDC sessions and merge everything
+into one table.
+*/
+
+/*
+Drop all the old tables. Yes, we will log out all OIDC users, but not really a big deal
+*/
+
+DROP TABLE IF EXISTS "oidc_tokens";
+DROP TABLE IF EXISTS "oidc_userinfo";
+DROP TABLE IF EXISTS "oidc_codes";
+
+/*
+Create a new simple OIDC sessions table that will hold tokens + userinfo.
+*/
+
+CREATE TABLE IF NOT EXISTS "oidc_sessions" (
+    "sub" TEXT NOT NULL UNIQUE PRIMARY KEY,
+    "access_token_hash" TEXT NOT NULL UNIQUE,
+    "refresh_token_hash" TEXT NOT NULL UNIQUE,
+    "scope" TEXT NOT NULL,
+    "client_id" TEXT NOT NULL,
+    "token_expires_at" BIGINT NOT NULL,
+    "refresh_token_expires_at" BIGINT NOT NULL,
+    "nonce" TEXT NOT NULL DEFAULT '',
+    "userinfo_json" TEXT NOT NULL
+);