Create index.md for my tutorial on implementing MetaMask and ENS into a website

[SebastianSupreme]

Description

I've created a simple tutorial on how to connect an HTML website to MetaMask using JavaScript and ethers.js to fetch the user's account data and possibly their ENS domain.

Related Issue

[gatsby-cloud[bot]]

:white_check_mark: ethereum-org-website-dev deploy preview ready

• Deploy preview
• Build logs · 22m build time

[corwintines]

Hey @SebastianSupreme, could you fill out an issue form for us to review first: https://github.com/ethereum/ethereum-org-website/issues/new?assignees=&labels=feature+%3Asparkles%3A%2Ccontent+%3Afountain_pen%3A&template=suggest_tutorial.yaml&title=Suggest+a+tutorial

This helps us take a look and see if this is something that should be added, or if this is already covered by another tutorial. This also helps in preventing you from doing a bunch of work that may not get accepted. Feel free to reopen this after you have filled that out, but going to close this until that has been done.

[SebastianSupreme]

@corwintines I created issue #7968 "Suggest a tutorial". Could you please reopen my PR now so that it can eventually merge with the main branch?