/// binding function: Creates a binding between an HTML element and a callback function
/// binding function: Creates a binding between an HTML element and a callback function
/// - element: A null-terminated string identifying the HTML element(s) to bind to
/// - callback: A function to be called when the bound event triggers
///
/// This function performs compile-time validation on the callback function to ensure it:
/// 1. Is a proper function (not another type)
/// 2. Returns void
/// 3. Is not generic
/// 4. Does not use variable arguments
///
/// The callback function can accept various parameter types:
/// - Event: Gets the full event object
/// - *Event: Gets a pointer to the event object
/// - Other parameters will be automatically converted from event arguments in order:
///   * bool: Converted from event argument bool value
///   * int types: Converted from event argument integer value
///   * float types: Converted from event argument float value
///   * [:0]const u8: For null-terminated string data from event
///   * [*]const u8: For raw pointer data from event
///
/// Note: Event and *Event parameters do not consume argument indices from the event,
/// but all other parameter types will consume arguments in the order they appear.
///
/// Returns:
/// - The binding ID that can be used to unbind later
pub fn binding(self: webui, element: [:0]const u8, comptime callback: anytype) !usize