account page stubbed: link to etsy sign up

database_migrations/000009_etsy_oauth_requests.up.sql

@@ -0,0 +1,11 @@
+CREATE TABLE etsy_oauth_requests (
+	account_id		INTEGER			NOT NULL,
+	state 			BYTEA			NOT NULL,
+	code_verifier	BYTEA			NOT NULL,
+	expiration		TIMESTAMPTZ		NOT NULL,
+
+	PRIMARY KEY (state),
+	FOREIGN KEY (account_id) REFERENCES accounts
+);
+
+CREATE UNIQUE INDEX ON etsy_oauth_requests (state);