Type-safe Input Components for Calico

This PR implements typed events for inputs as requested in #[issue_number]. It provides a type-safe way to handle input events with automatic type derivation based on input types.

Features

• New TypedInput[F[_], A] trait for type-safe input components
• Automatic type derivation based on input type:
  • TypedInput.text[F] → String
  • TypedInput.number[F] → Double
  • TypedInput.date[F] → LocalDate
  • TypedInput.email[F] → String (with validation)
  • TypedInput.password[F] → String
  • TypedInput.file[F] → File[F]
• Built-in validation for specific input types (e.g., email format)
• Resource-safe input handling
• Composable with Cats Effect and FS2

Example Usage

val app: Resource[IO, HtmlDivElement[IO]] =
  for {
    // Type-safe input components
    numberInput <- TypedInput.number[IO].render
    dateInput <- TypedInput.date[IO].render
    
    // Events are automatically typed
    _ <- Resource.eval(
      numberInput.events.foreach { value: Double =>
        // Type-safe value handling
      } ++
      dateInput.events.foreach { date: LocalDate =>
        // Type-safe date handling
      }
    ).compile.drain.background
    
    div <- div(
      label("Number: "), numberInput,
      br,
      label("Date: "), dateInput
    )
  } yield div

Documentation

Added a new demo at docs/demos/typed-inputs.md showing:

• How to create and use typed inputs
• Type-safe event handling
• Form composition with multiple inputs
• Input validation

Testing

• Add unit tests for TypedInput implementations
• Add integration tests for form composition
• Test browser compatibility

Related Issues

Closes #399