[Feature][plugin-comp-preview]: combine plugin-preview and plugin-playground into one

[SoonIter]

What problem does this feature solve?

#1105 (comment)

closes #1452

What does the proposed API look like?

some historical problems need to be solved

1. support tsx syntax highlight and no type error, closes [Feature]: Support highlighting in tsx code when uses @rspress/plugin-preview #1113

2. support ```tsx pure ```tsx playground ```tsx preview can be used together
   ```tsx default value should be pure

"playground" should be editable "preview" to reduce the learn cost

3. style isolated (iframe or shadow-dom), closes [Feature]: The playground plugin requires iframe to isolate the style to avoid style pollution. #1394

4. multiple files support(optional), closes [Feature]: optimize @rspress/plugin-preview style #1315

[SoonIter]

any new design can be accepeted, this would be a new plugin called plugin-comp-preview, and it won't has any relation to plugin-preview and plugin-playground (for no breaking)

[chenjiahan]

This is worth writing an RFC to explain the new design and what problems it solves.