refactor: Refactor LinkButtonProperties to be two base classes and make all components that currently implement the interface extend it

[DavideMininni-Fincons]

We want to refactor our button and link components.
For this a base class should be created for button components and a separate one for link components. These should be created in src/components/core/common-behaviors. The base classes should include basic styles needed for every button or link (e.g. cursor, outline, display). This should be considered case by case if it makes sense.

With this we will split each current action elements into two components:

• <sbb-button> => <sbb-button> + <sbb-button-link>
• <sbb-link> => <sbb-link> + <sbb-link-button>
• <sbb-card-action> => <sbb-card-button> + <sbb-card-link>
• <sbb-header-action> => <sbb-header-button> + <sbb-header-link>
• <sbb-menu-action> => <sbb-menu-button> + <sbb-menu-link>
• <sbb-navigation-action> => <sbb-navigation-button> + <sbb-navigation-link>

Where necessary, create a common directory next to the components directory (e.g. src/components/button/{button,link,common}) for styles or common functionality (e.g. functions or mixins).
Avoid duplicating styles by using the possibility of adding an array of style objects to the custom element class.

.
└── src/components/
    ├── core/common-behaviors/
    │   ├── button-element-base.ts (SbbButtonElementBase)
    │   └── link-element-base.ts (SbbLinkElementBase)
    └── button/
        ├── common/
        │   ├── button-base.scss
        │   └── button-base.ts (common functionality/mixins)
        ├── button/
        │   ├── button.scss
        │   ├── button.ts (extends SbbButtonElementBase)
        │   ├── button.stories.ts
        │   ├── button.spec.ts
        │   └── button.e2e.ts
        └── button-link/
            ├── button-link.scss
            ├── button-link.ts (extends SbbLinkElementBase)
            ├── button-link.stories.ts
            ├── button-link.spec.ts
            └── button-link.e2e.ts