feat: add sqlstring and supports-color modules

- Introduced sqlstring module for SQL escape and formatting.
- Added supports-color module to detect terminal color support.
- Created dashboard and login views with Bootstrap styling.
- Implemented user schema in SQL with mock data for testing.

backend/node_modules/async/flatMapSeries.js

@@ -0,0 +1,41 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+
+var _concatLimit = require('./concatLimit.js');
+
+var _concatLimit2 = _interopRequireDefault(_concatLimit);
+
+var _awaitify = require('./internal/awaitify.js');
+
+var _awaitify2 = _interopRequireDefault(_awaitify);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * The same as [`concat`]{@link module:Collections.concat} but runs only a single async operation at a time.
+ *
+ * @name concatSeries
+ * @static
+ * @memberOf module:Collections
+ * @method
+ * @see [async.concat]{@link module:Collections.concat}
+ * @category Collection
+ * @alias flatMapSeries
+ * @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
+ * @param {AsyncFunction} iteratee - A function to apply to each item in `coll`.
+ * The iteratee should complete with an array an array of results.
+ * Invoked with (item, callback).
+ * @param {Function} [callback] - A callback which is called after all the
+ * `iteratee` functions have finished, or an error occurs. Results is an array
+ * containing the concatenated results of the `iteratee` function. Invoked with
+ * (err, results).
+ * @returns A Promise, if no callback is passed
+ */
+function concatSeries(coll, iteratee, callback) {
+    return (0, _concatLimit2.default)(coll, 1, iteratee, callback);
+}
+exports.default = (0, _awaitify2.default)(concatSeries, 3);
+module.exports = exports.default;