Added new components and updated existing some components

Components

• Attribute added
• Pill added
• Title added with icons
• Pagination added
• Session added
• Toggle-group added
• Tooltip added

Pages

• Infofiche added

Layouts

• Intro added
• Collapse added on a sectional level
• Infofiche layout added

Updates

• Updated POC to use l-intro instead of l-section
• Subscription updated to not rely on l-section
• Section updated to support a different type of content