feat: add openid connect table

Author: stakach

migration/db/migrations/20251103000000001_add_openid_connect.sql

@@ -0,0 +1,34 @@
+-- +micrate Up
+-- SQL in section 'Up' is executed when this migration is applied
+
+-- Table created by rails migration:
+-- class CreateDoorkeeperOpenidConnectTables < ActiveRecord::Migration[8.1]
+--   create_table :oauth_openid_requests do |t|
+--     t.references :access_grant, null: false, index: true
+--     t.string :nonce, null: false
+--   end
+--   add_foreign_key :oauth_openid_requests, :oauth_access_grants,
+--                   column: :access_grant_id, on_delete: :cascade
+-- end
+
+CREATE TABLE IF NOT EXISTS oauth_openid_requests (
+  id BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  access_grant_id BIGINT NOT NULL,
+  nonce TEXT NOT NULL
+);
+
+-- index that Rails would add for t.references ... index: true
+CREATE INDEX IF NOT EXISTS idx_oauth_openid_requests_on_access_grant_id
+  ON oauth_openid_requests (access_grant_id);
+
+-- foreign key with ON DELETE CASCADE
+ALTER TABLE oauth_openid_requests
+  ADD CONSTRAINT fk_oauth_openid_requests_access_grant
+  FOREIGN KEY (access_grant_id)
+  REFERENCES oauth_access_grants (id)
+  ON DELETE CASCADE;
+
+-- +micrate Down
+-- SQL section 'Down' is executed when this migration is rolled back
+
+DROP TABLE IF EXISTS oauth_openid_requests;