Remove dependency on jQuery

This stems from
#13 (comment).

Author: sauloperez

lib/injectCustomJavaScript.js

@@ -5,7 +5,7 @@ const handleLoggedInPage = (webview, token) => {
 };
 
 const handleLoginPage = (webview) => {
-  webview?.injectJavaScript("$('#user_remember_me').prop('checked', true);");
+  webview?.injectJavaScript("document.querySelector('#user_remember_me').checked = true");
 };
 
 const injectCustomJavaScript = (webViewRef, token, url) => {