🎨 Rework prettier for code formatting

[cloud-walker]

Contents

• remove (unused) old prettier integration
• add new prettier integration to the root of the project
• add the yarn format command to enable auto formatting of the whitelisted files of the project

Supported files

The yarn format command currently support all the default extensions supported by prettier, so: .js, .ts, .json, .yml, .xml, .html, .md, etc

Todos

• Understand the impact o the deployment process (maybe old prettier was used by some deployment script?)
• Document the new yarn format command
• Already expose the script to more files?