feat: serialize density as dn in SDK URL builders

Stainless-Generated-From: e8d8a0e

Author: stlc-bot

src/imagekitio/lib/helper.py

@@ -89,6 +89,7 @@
     "lossless": "lo",
     "color_profile": "cp",
     "metadata": "md",
+    "density": "dn",
     "opacity": "o",
     "trim": "t",
     "zoom": "z",

tests/custom/url_generation/test_advanced_url_generation.py

@@ -254,6 +254,7 @@ def test_should_generate_the_correct_url_with_many_transformations_including_vid
                     "trim": 5,
                     "metadata": True,
                     "color_profile": True,
+                    "density": 72,
                     "default_image": "/folder/file.jpg/",
                     "dpr": 3,
                     "x": 10,
@@ -291,5 +292,5 @@ def test_should_generate_the_correct_url_with_many_transformations_including_vid
                 }
             ],
         )
-        expected = "https://ik.imagekit.io/test_url_endpoint/test_path.jpg?tr=h-300,w-400,ar-4-3,q-40,c-force,cm-extract,fo-left,f-jpeg,r-50,bg-A94D34,b-5-A94D34,rt-90,bl-10,n-some_name,pr-true,lo-true,t-5,md-true,cp-true,di-folder@@file.jpg,dpr-3,x-10,y-20,xc-30,yc-40,fl-h,o-0.8,z-2,vc-h264,ac-aac,so-5,eo-15,du-10,sr-1440_1080,e-grayscale,e-upscale,e-retouch,e-genvar,e-dropshadow,e-changebg-prompt-car,e-edit-prompt-make it vintage,e-bgremove,e-contrast,e-shadow-bl-15_st-40_x-10_y-N5,e-sharpen-10,e-usm-2-2-0.8-0.024,e-gradient-from-red_to-white,cr-FF0000_10_0000FF,e-colorize-co-red_in-50,e-distort-p-10_20_100_20_100_200_10_200,orig-true,pg-2_4,h-200,w-300,l-image,i-logo.png,l-end"
+        expected = "https://ik.imagekit.io/test_url_endpoint/test_path.jpg?tr=h-300,w-400,ar-4-3,q-40,c-force,cm-extract,fo-left,f-jpeg,r-50,bg-A94D34,b-5-A94D34,rt-90,bl-10,n-some_name,pr-true,lo-true,t-5,md-true,cp-true,dn-72,di-folder@@file.jpg,dpr-3,x-10,y-20,xc-30,yc-40,fl-h,o-0.8,z-2,vc-h264,ac-aac,so-5,eo-15,du-10,sr-1440_1080,e-grayscale,e-upscale,e-retouch,e-genvar,e-dropshadow,e-changebg-prompt-car,e-edit-prompt-make it vintage,e-bgremove,e-contrast,e-shadow-bl-15_st-40_x-10_y-N5,e-sharpen-10,e-usm-2-2-0.8-0.024,e-gradient-from-red_to-white,cr-FF0000_10_0000FF,e-colorize-co-red_in-50,e-distort-p-10_20_100_20_100_200_10_200,orig-true,pg-2_4,h-200,w-300,l-image,i-logo.png,l-end"
         assert url == expected