refactor: standardize property names for transformation interface and supported transforms

Author: manu4543

src/constants/supportedTransforms.ts

@@ -10,7 +10,7 @@ export const supportedTransforms: { [key: string]: string } = {
   border: "b",
   crop: "c",
   cropMode: "cm",
-  DPR: "dpr",
+  dpr: "dpr",
   focus: "fo",
   quality: "q",
   x: "x",
@@ -39,6 +39,7 @@ export const supportedTransforms: { [key: string]: string } = {
   effectGray: "e-grayscale",
   effectShadow: "e-shadow",
   effectGradient: "e-gradient",
+  rotate: "rt",
 
   // AI & advanced effects
   grayscale: "e-grayscale",

src/interfaces/Transformation.ts

@@ -55,7 +55,7 @@ export interface Transformation {
      * Possible values 0.1  to 5 or `auto` for automatic DPR calculation.
      * @link https://imagekit.io/docs/image-resize-and-crop#dpr---dpr
      */
-    DPR?: number
+    dpr?: number
 
     /**
      * This parameter can be used along with pad resize, maintain ratio, or extract crop to change the behavior of padding or cropping