[Feat](FSC-580): List - Refactoring and enhancing the user interface

[Hubert06]

Features

Activity Timeline

• Added field-attributes attribute
• Added fields section styling hooks
  • --avonni-activity-timeline-item-fields-color-background
  • --avonni-activity-timeline-item-fields-radius-border
  • --avonni-activity-timeline-item-fields-sizing-border
  • --avonni-activity-timeline-item-fields-styling-border
  • --avonni-activity-timeline-item-fields-color-border
  • --avonni-activity-timeline-item-fields-spacing-inline
  • --avonni-activity-timeline-item-fields-spacing-block

List

• Added item.avatar.position attribute
• Added item.fields attribute
• Added field-attributes attribute
• Added fields section styling hooks
  • --avonni-list-item-fields-color-background
  • --avonni-list-item-fields-radius-border
  • --avonni-list-item-fields-sizing-border
  • --avonni-list-item-fields-styling-border
  • --avonni-list-item-fields-color-border
  • --avonni-list-item-fields-spacing-inline
  • --avonni-list-item-fields-spacing-block
• Added other styling hooks
  • --avonni-list-item-actions-vertical-alignment
  • --avonni-list-item-description-line-clamp
  • --avonni-list-item-shadow
• Added visibleActions and visibleMediaActions attributes