fix(signature): 시그니처 이미지 크롭 비율 자유 조정 허용

src/views/Signature/SignatureManagement.vue

@@ -376,7 +376,7 @@
       persistent
     >
       <v-card>
-        <v-card-title>이미지 크롭 (1:1 비율)</v-card-title>
+        <v-card-title>이미지 크롭</v-card-title>
         <v-card-text>
           <div class="cropper-wrapper">
             <img
@@ -508,7 +508,6 @@ export default {
             this.cropper.destroy()
           }
           this.cropper = new Cropper(this.$refs.cropper_image, {
-            aspectRatio: 1,
             viewMode: 1,
           })
         })
@@ -535,7 +534,7 @@ export default {
 
       const MAX_WIDTH = 800
       if (canvas.width > MAX_WIDTH) {
-        const height = MAX_WIDTH
+        const height = (MAX_WIDTH * canvas.height) / canvas.width
         const resizeCanvas = document.createElement('canvas')
         resizeCanvas.width = MAX_WIDTH
         resizeCanvas.height = height