Define email_singups table

migrations/sqlite/2022-01-04-122156_create_email_signups_table/down.sql

@@ -0,0 +1 @@
+DROP TABLE email_signups;

migrations/sqlite/2022-01-04-122156_create_email_signups_table/up.sql

@@ -0,0 +1,9 @@
+CREATE TABLE email_signups (
+  id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+  email VARCHAR NOT NULL,
+  token VARCHAR NOT NULL,
+  expiration_date TIMESTAMP NOT NULL
+);
+
+CREATE INDEX email_signups_token ON email_signups (token);
+CREATE UNIQUE INDEX email_signups_token_requests_email ON email_signups (email);