Improvements and fixes

[krutoo]

• dark mode
• scroll to top when story changed
• ability control of markdown content width and maybe reduce to 1024 by default
• reduce package install size by removing react-icons
• ability to disable aside for story
• more simplicity for emitted module, use service-pattern to resolve data
• search does not take into account data in .meta.json files.
• change box-shadow to border in header, aside, plate
• readme about dark mode and other features
• <Controls /> and useControls as alternative for Storybook' knobs
• instead mdx/story views add option inline (use iframe or not) and upgrade option layout and make different default between js/mdx
• gap between groups in menu (because single item groups can be visually lost between other items)
• component registry to make UI fully customizable
• move shiki to ./integrations, remove syntax highlight from basic CodeBlock component, make shiki easy to use trough component registry
• Error boundary and error message