[javascript] began reworking token handling to match what is done with the haskell client

nodejs/database/tokens.js

@@ -0,0 +1,16 @@
+import db from './db.js';
+
+const addTokenStatement = db.prepare(`INSERT INTO tokens(data) VALUES (?);`);
+const getTokenStatement = db.prepare(`SELECT data FROM tokens;`);
+
+export function addToken(token) {
+	return addTokenStatement.run(token).lastInsertRowid;
+}
+
+export function getToken() {
+	const data = getTokenStatement.get();
+	if (data === undefined) {
+		return null;
+	}
+	return data.data;
+}