feat: border angle animations (#1469)

Co-authored-by: vaxerski <43317083+vaxerski@users.noreply.github.com>

example/hyprland.conf

@@ -73,6 +73,7 @@ animations {
     animation = windows, 1, 7, myBezier
     animation = windowsOut, 1, 7, default, popin 80%
     animation = border, 1, 10, default
+    animation = borderangle, 1, 8, default
     animation = fade, 1, 7, default
     animation = workspaces, 1, 6, default
 }