Eslint setup for both client and server

[mendacium-a11y]

Pull Request

Related Issues:

Fixes #244

Description: set up eslint for client and server, along with scripts in package.json

Checklist:

• [x] I have tested my changes.
• [x] My code follows the project's coding standards.
• [x] I have updated the documentation (if applicable).

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[mendacium-a11y]

Can we also apply it on `client/tailwind.config.js

you can check now, i have updated the scripts

[mendacium-a11y]

happy to help :smile: