Added schema.sql and testdata.sql, moved sql out of tests package

schema.sql

@@ -0,0 +1,18 @@
+PRAGMA foreign_keys=ON;
+BEGIN TRANSACTION;
+CREATE TABLE IF NOT EXISTS jwtblacklist (
+jti TEXT PRIMARY KEY CHECK(jti GLOB '[0-9a-fA-F-]*'),
+exp INTEGER NOT NULL
+) STRICT;
+CREATE TABLE IF NOT EXISTS "users" (
+    id INTEGER PRIMARY KEY AUTOINCREMENT, 
+    username TEXT NOT NULL UNIQUE, 
+    password_hash TEXT, 
+    created_at INTEGER DEFAULT (unixepoch())
+) STRICT;
+CREATE TRIGGER cleanup_expired_tokens
+AFTER INSERT ON jwtblacklist
+BEGIN
+DELETE FROM jwtblacklist WHERE exp < strftime('%s', 'now');
+END;
+COMMIT;