feat(LUX-29): new component: login-method-button

[remypar5]

For reviewers:

• The name of the component became the topic of discussion again. Since this is a button which directs you to a "middel" instead of a "manier", the term method seems unsuitable. If you have a suggestion, please provide it.
• There are no tests, yet, and are out of scope for this PR.
• Currently, Storybook's preview.tsx shows both dark and default/light mode. That will change later to a theme switcher.
• The core tokens have the logius namespace whereas the common and component tokens have the lux namespace. This is deliberate
• The component catches and stops the HTML click event and replaces it with a luxClick event. This is to make sure the internals of the component (which is protected by the shadowDom) don't get exposed. We are still debating whether or not to do this.

[rwittenberns]

De CI pipeline faalt nog op het pnpm run build:style-dictionary command

[remypar5]

Een handmatige review is uitgevoerd door een UX designer uit een ander team. De volgende bevindingen moeten worden behandeld:

• Icon
  • alignment/padding
  • Icon is te groot
  • Digid icon
    • border color lijkt af te wijken van design
    • border radius is korrelig
• Focus state
  • outline color (light)
  • outline color (dark)
  • wordt ook toegepast bij active state
• Border color
  • alle states (light)
  • alle states (dark)
• line-height is niet gezet
• Labels
  • eIDAS
  • Eherkenning