Update resources.rst - Added link to Aderyn VS Code Extension

[TilakMaddy]

GM!
Aderyn Maintainer here!

We recently launched a VS Code extension to make it easy to use Aderyn. So I thought I'll include that link in the resources section

Especially if someone is using Solidity for first time, they don't want to be bogged with installing any of these tools manually. So a vscode extension that would take care of everything under the hood in our opinion would make life easy :)

That's why I want to add this link.

I am not sure the formatting in rst doc for links is correct though, so please adjust before merge if needed.

https://marketplace.visualstudio.com/items?itemName=Cyfrin.aderyn

Thank you.

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