Image Scale By Side - automatically determine which side to use

[Brent Liu]

Forgot how to do a pull request.

This allows the Image Scale by Side node to automatically use whichever side is longer for image resizing.

`
class ImageScale_Side:
upscale_methods = ["nearest-exact", "bilinear", "area"]
crop_methods = ["disabled", "center"]

def __init__(self) -> None:
    pass

@classmethod
def INPUT_TYPES(cls):
    return {
        "required": {
            "image": ("IMAGE",),
            "max_width": field.INT,
            "max_height": field.INT,
            "upscale_method": (cls.upscale_methods,),
            "crop": (cls.crop_methods,)}}

RETURN_TYPES = ("IMAGE",)
FUNCTION = "upscale"

CATEGORY = TREE_IMAGES

def upscale(self, image, upscale_method, max_width, max_height, crop):
    samples = image.movedim(-1, 1)

    size = get_image_size(image)

    width_B = int(size[0])
    height_B = int(size[1])

    width = width_B
    height = height_B

    if width >= height:
        heigh_ratio = height_B / width_B
        width = max_width
        height = heigh_ratio * width
    else:
        width_ratio = width_B / height_B
        height = max_height
        width = width_ratio * height

    width = math.ceil(width)
    height = math.ceil(height)

    cls = comfy.utils.common_upscale(samples, width, height, upscale_method, crop)
    cls = cls.movedim(1, -1)
    return (cls,)`

[Derfuu]

Added as default choice for side scale nodes.