feat: Add API key authentication (#1254)

Closes #945

server/api/helpers/utils/hash.js

@@ -0,0 +1,21 @@
+/*!
+ * Copyright (c) 2024 PLANKA Software GmbH
+ * Licensed under the Fair Use License: https://github.com/plankanban/planka/blob/master/LICENSE.md
+ */
+
+const crypto = require('crypto');
+
+module.exports = {
+  sync: true,
+
+  inputs: {
+    data: {
+      type: 'ref',
+      required: true,
+    },
+  },
+
+  fn(inputs) {
+    return crypto.createHash('sha256').update(inputs.data).digest('hex');
+  },
+};