DivHStacked / DivVStacked don't accept a gap parameter

[linguistic76]

Summary

DivHStacked and DivVStacked don't accept a gap parameter, so callers that need a non-default gap must either write the Tailwind class manually or maintain wrapper components that do the translation.

Reproduction

from monsterui.franken import DivHStacked
DivHStacked(A, B, gap=4)   # TypeError — unexpected keyword argument

Expected behaviour

DivHStacked(A, B, gap=4)   # renders with class "gap-4" applied
DivVStacked(A, B, gap=2)   # renders with class "gap-2" applied

Current workaround

Downstream code maintains wrapper components solely to translate gap=int into the corresponding Tailwind class:

def DivHStacked(*c, gap: int = 2, cls: str = "", **kwargs):
    classes = [f"flex items-center gap-{gap}"]
    if cls:
        classes.append(cls)
    return Div(*c, cls=" ".join(classes), **kwargs)

These wrappers exist only because the originals don't support gap — they add no semantic value of their own.

Suggested fix

Accept an optional gap: int | None = None keyword on both DivHStacked and DivVStacked and append f"gap-{gap}" to the class list when provided.