Rework documentation front

[MGREMY]

Changes :

• [x] Match the flowbite documentation style based on figma design

Component pages

• [x] Accordion
• [x] Alert
• [x] Badge
• [x] Breadcrumb
• [x] Button
• [x] Dropdown
• [x] Indicator
• [x] Modal
• [ ] Navbar
• [ ] Scroll-top
• [ ] Sidebar
• [ ] Forms

Each pages

• [ ] List on right side with important part of the page (ex. Alert → Default alert | Alert with icon)

Customize pages

• [x] Override component base style → Add a page to explain how to override component's base style used in theme services
• [x] CustomStyle → Add a page to explain how to add CustomStyle OR add a section per component pages with dedicated example
• [ ] Inheriting component → Add a page to explain how to create component with inheritance

Fixes and features

• [x] Change input type boolean from boolean string | boolean to boolean, unknown as the input of booleanAttribute is unknown
• [x] Move default value in child component to be the one in parent component (ex. SidebarItemComponent.color = (SidebarItemGroupComponent||SidebarMenuComponent).color
• [ ] Update SidebarItemComponent's color to get SidebarItemGroup or SidebarMenuComponent's color
• [ ] Move shared features to structural directive if possible
• [x] Sidebar display over with backdrop
• [ ] Modal backdrop, see #33