added smooth scrolling, back to top button

[rajatrajputdev]

I've added smooth scrolling, and added a button in which when user scrolls down a button on the bottom appears and if the user clicks on it, he gets back to the top of the website. Please also add hacktoberfest labels to it.

[KiranPranay]

@rajatuiwebdev , Thanks for the contribution, but please add your css rules into style.scss and leave style.css untouched.
Refer CONTRIBUTION.md
Also, create "back to top" button from opencodelaw.js directly
for eg:

    // create back to top button
    backToTop.classList.add("back-to-top");
    backToTop.id = "backToTop";
    backToTop.title = "Go to top";
    backToTop.textContent = "↑";
    backToTop.addEventListener("click", () => {
      window.scrollTo({ top: 0, behavior: "smooth" });
    }
    );

Please, add all yours script directly to js/opencodelaw.js without creating any new files.

[rajatrajputdev]

did the required commits, please check. and compile the sass before using the feature.

[KiranPranay]

@rajatuiwebdev plz resolve conflicts in css/style.scss and js/opencodelaw.js .
Then good to go 👍🏼 .

[rajatrajputdev]

@rajatuiwebdev plz resolve conflicts in css/style.scss and js/opencodelaw.js . Then good to go 👍🏼 .

resolved the issues.

[KiranPranay]

@rajatuiwebdev plz resolve conflicts in css/style.scss and js/opencodelaw.js . Then good to go 👍🏼 .

resolved the issues.

There are some conflicts, anyway i resolved it. Thank you 🥇