♻ Add Formatting Configurations

[pcaversaccio]

This PR adds all the formatting configurations we need. I use Hardhat since I prefer it over cast for chainops stuff and I also use prettier in order to prettify md, yml, and other file formats. I also add feature, issue, and PR templates, as well as Slither is now part of the CI.

[pcaversaccio]

@mds1 thanks for the review and the inputs - will make a final run-through tomorrow morning and will merge thereafter.

[mds1]

Sounds great, just leave a comment or re-request review from me if you want me to take another look before merge!

[pcaversaccio]

@mds1 After reviewing again I made the following additions:

• Implemented named function parameters https://github.com/pcaversaccio/createx/pull/3/commits/c62cd2deab88196038eadc466daf95a3df488941. I want to make an industry best practice example here on being explicit :-D. The solhint warnings you see in the GH CI are due to bug on their side on built-in functions: https://github.com/protofire/solhint/issues/471. All the user-specific functions should be covered, but would appreciate a quick review.
• I added a renovate.json configuration file that covers as well CI actions bumps or other potential missed dependency updates by dependabot: https://github.com/pcaversaccio/createx/pull/3/commits/c468dd912e11e3782a41b1807bac3ffca5df00f6.
• Also fixing comment 9: https://github.com/pcaversaccio/createx/pull/3/commits/1406ff70fa52db9b52f0ee3fd918c878f854731b.

Once you approve these changes, we can merge :-D!