docs: Improve README with clearer explanations and examples

[angryPodo]

• Clearly document how Wisp passes query parameters globally.
• Explain that property name conflicts between Routes are detected at compile time.
• Explicitly state that the URI path defines the screen order, while properties are passed via query parameters.
• Expand use case examples:
  • Single screen
  • Multiple screen stack
  • Mix of screens with and without parameters
• Ensure the Korean version () is also updated.