Fix the URL checker for basic auth

Fixed the URL checker to allow for links with basic authentication.

I need to be able to deploy to nodes with basic auth. The current URL checker regex doesn't
allow for the following formate:

https://username:password@nodehost.com

Fixed the URL checker to allow for basic auth.

src/Constants.ts

@@ -186,7 +186,7 @@ export class Constants {
     hasDigits: /(?=.*\d)/g,
     infuraProjectname: /^([a-zA-Z]|\d|\s|[-_:]){3,}$/g,
     isLowerCase: /^[a-z0-9_\-!@$^&()+=?\/<>|[\]{}:.\\~ #`*"'%;,]+$/g,
-    isUrl: /^(?:http(s)?:\/\/)?[\w.-]+(?:\.[\w.-]+)+[\w\-._~:/?#[\]@!$&'()*+,;=]+$/igm,
+    isUrl: /^(?:http(s)?:\/\/)?[\w:@.-]+(?:\.[\w.-]+)+[\w\-._~:/?#[\]@!$&'()*+,;=]+$/igm,
     lowerCaseLetter: /(?=.*[a-z]).*/g,
     // tslint:disable-next-line: max-line-length
     port: /^([1-9]|[1-8][0-9]|9[0-9]|[1-8][0-9]{2}|9[0-8][0-9]|99[0-9]|[1-8][0-9]{3}|9[0-8][0-9]{2}|99[0-8][0-9]|999[0-9]|[1-5][0-9]{4}|6[0-4][0-9]{3}|65[0-4][0-9]{2}|655[0-2][0-9]|6553[0-5])$/,