Standardize UI on PrimeNG and remove/replace Material UI components

[anvabr]

Problem description

Recent 'upgrade' (via merge) of Guardian UI has introduced some PrimeNG components into the codebase, while most of the UI currently is based on Material UI. This is not ideal, complicates maintenance and extensibility, introduces another dependency tree etc.

Requirements

• Standardize Guardian UI to be PrimeNG-based
• Remove/Replace all Material UI components with PrimeNG ones without changing the look&feel

Definition of done

• Fulfill the requirements as specified above
• Update community contribution guidelines to require the use of PrimeNG-based components

Acceptance criteria

Only one component library is used in Guardian UI code