Refactor Client

[misha1235000]

Todo:

Refactor the whole client side.

Description

Here are some of the changes needed:

• Migrate from Angular 9, to Angular 10.
• Add .env to the client side (With the serving server)
• Change ALL the .html components, so they won't have style attribute, and move all of the style attributes to the css files with classes in the HTML.
• Change the debounce to be implemented the "Angular Way" using rxjs debounce.
• Think where its possible to use a generic component.
• Add more detailed comments where they are needed.

Optional

• Add testing to the client side.