chore: add project dependencies and configuration files

Initial setup of project dependencies including axios, express, dotenv, and other supporting packages. Added configuration files and documentation for project setup and usage.

node_modules/axios/lib/helpers/composeSignals.js

@@ -0,0 +1,48 @@
+import CanceledError from "../cancel/CanceledError.js";
+import AxiosError from "../core/AxiosError.js";
+import utils from '../utils.js';
+
+const composeSignals = (signals, timeout) => {
+  const {length} = (signals = signals ? signals.filter(Boolean) : []);
+
+  if (timeout || length) {
+    let controller = new AbortController();
+
+    let aborted;
+
+    const onabort = function (reason) {
+      if (!aborted) {
+        aborted = true;
+        unsubscribe();
+        const err = reason instanceof Error ? reason : this.reason;
+        controller.abort(err instanceof AxiosError ? err : new CanceledError(err instanceof Error ? err.message : err));
+      }
+    }
+
+    let timer = timeout && setTimeout(() => {
+      timer = null;
+      onabort(new AxiosError(`timeout ${timeout} of ms exceeded`, AxiosError.ETIMEDOUT))
+    }, timeout)
+
+    const unsubscribe = () => {
+      if (signals) {
+        timer && clearTimeout(timer);
+        timer = null;
+        signals.forEach(signal => {
+          signal.unsubscribe ? signal.unsubscribe(onabort) : signal.removeEventListener('abort', onabort);
+        });
+        signals = null;
+      }
+    }
+
+    signals.forEach((signal) => signal.addEventListener('abort', onabort));
+
+    const {signal} = controller;
+
+    signal.unsubscribe = () => utils.asap(unsubscribe);
+
+    return signal;
+  }
+}
+
+export default composeSignals;