[FEATURE] Add contributing guidelines

[Panquesito7]

Detailed description

We're currently missing contributing guidelines for this repository. I recommend adding contributing guidelines in each repository.

Context

This will make the contribution process easier and will help our contributors understand better what the project is about and how can they contribute.

Possible implementation

No response

Additional information

The readme also mentions a contributing file that is currently unavailable, thus, leading to an invalid link page.

Code of Conduct

• I agree to follow this project's Code of Conduct

[mkubdev]

Yup, nice idea, we need to update them before the start of Hacktoberfest. 💡

[mkubdev]

@Panquesito7 Do you know where I can find an example?

[Panquesito7]

We could use this as a template. It is good, IMO: https://github.com/dev-protocol/devprotocol.xyz/blob/update_links/CONTRIBUTING.md

[mkubdev]

Awesome thanks!