blt function rotates image anti-clockwise, cos/sin rotate clockwise.
Is it expected that these should behave the opposite to each other? I would expect both to rotate clockwise as it's the most intuitive, and I believe SDL2 rotates images clockwise too.

Example:

```
import pyxel

class Test:
    def __init__(self):
        pyxel.init(64, 64)

        self.img = pyxel.Image(32, 32)
        self.img.cls(2)
        self.img.line(16, 16, 31, 16, 7)

        self.angle = 0

        pyxel.run(self.update, self.draw)

    def update(self):
        self.angle += 1
    
    def draw(self):
        pyxel.cls(0)
        pyxel.blt(16, 16, self.img, 0, 0, 32, 32, rotate=self.angle)

        x2 = 32 + pyxel.cos(self.angle) * 32
        y2 = 32 + pyxel.sin(self.angle) * 32
        pyxel.line(32, 32, x2, y2, 8)

Test()

```
![Image](https://github.com/user-attachments/assets/9e197e0f-a763-472d-bace-ed2d86a42c7c)