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/resolveConfig.js

@@ -0,0 +1,57 @@
+import platform from "../platform/index.js";
+import utils from "../utils.js";
+import isURLSameOrigin from "./isURLSameOrigin.js";
+import cookies from "./cookies.js";
+import buildFullPath from "../core/buildFullPath.js";
+import mergeConfig from "../core/mergeConfig.js";
+import AxiosHeaders from "../core/AxiosHeaders.js";
+import buildURL from "./buildURL.js";
+
+export default (config) => {
+  const newConfig = mergeConfig({}, config);
+
+  let {data, withXSRFToken, xsrfHeaderName, xsrfCookieName, headers, auth} = newConfig;
+
+  newConfig.headers = headers = AxiosHeaders.from(headers);
+
+  newConfig.url = buildURL(buildFullPath(newConfig.baseURL, newConfig.url, newConfig.allowAbsoluteUrls), config.params, config.paramsSerializer);
+
+  // HTTP basic authentication
+  if (auth) {
+    headers.set('Authorization', 'Basic ' +
+      btoa((auth.username || '') + ':' + (auth.password ? unescape(encodeURIComponent(auth.password)) : ''))
+    );
+  }
+
+  let contentType;
+
+  if (utils.isFormData(data)) {
+    if (platform.hasStandardBrowserEnv || platform.hasStandardBrowserWebWorkerEnv) {
+      headers.setContentType(undefined); // Let the browser set it
+    } else if ((contentType = headers.getContentType()) !== false) {
+      // fix semicolon duplication issue for ReactNative FormData implementation
+      const [type, ...tokens] = contentType ? contentType.split(';').map(token => token.trim()).filter(Boolean) : [];
+      headers.setContentType([type || 'multipart/form-data', ...tokens].join('; '));
+    }
+  }
+
+  // Add xsrf header
+  // This is only done if running in a standard browser environment.
+  // Specifically not if we're in a web worker, or react-native.
+
+  if (platform.hasStandardBrowserEnv) {
+    withXSRFToken && utils.isFunction(withXSRFToken) && (withXSRFToken = withXSRFToken(newConfig));
+
+    if (withXSRFToken || (withXSRFToken !== false && isURLSameOrigin(newConfig.url))) {
+      // Add xsrf header
+      const xsrfValue = xsrfHeaderName && xsrfCookieName && cookies.read(xsrfCookieName);
+
+      if (xsrfValue) {
+        headers.set(xsrfHeaderName, xsrfValue);
+      }
+    }
+  }
+
+  return newConfig;
+}
+