fix: Admonition drop shadow setting will now apply to callouts (close #222)

Author: valentine195

src/assets/callout.scss

@@ -1,6 +1,8 @@
 .callout:not(.admonition) {
+    &.drop-shadow {
+        box-shadow: 0 0.2rem 0.5rem var(--background-modifier-box-shadow);
+    }
     .no-title {
         display: none;
     }
-    
-}
+}

src/callout/manager.ts

@@ -127,6 +127,9 @@ export default class CalloutManager extends Component {
                 titleContentEl.setText(admonition.title);
             }
         }
+        if (this.plugin.data.dropShadow) {
+            callout.addClass('drop-shadow')
+        }
     }
     getComputedHeights(el: HTMLDivElement): Heights {
         if (this.heightMap.has(el)) {