Add Login & React Router Dom Update 6.0.2

[acsiseci]

Add Login Page (with createContext) React Router Dom Update 5.2.0 >> 6.0.2

I am merge request to an open source project for the first time. Waiting for your comments

[melloware]

Looks like you have conflicts to be resolved.

[habubey]

As you can see we are not using React Router Dom anymore, therefore I am closing this issue.