feat(widget): 라이브 썸네일 컴포넌트를 추가한다

app/src/main/res/drawable/bg_live_thumbnail_detail.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <solid android:color="@color/gray_900" />
+    <stroke
+        android:width="2dp"
+        android:color="@color/color_62cfff" />
+    <corners android:radius="90dp" />
+</shape>