feat: add version number v0.1.5 to profile page footer

miniprogram/pages/profile/profile.wxss

@@ -254,3 +254,11 @@
   background: #ffffff;
   border-radius: 24rpx;
 }
+
+.version-text {
+  text-align: center;
+  font-size: 24rpx;
+  color: #cccccc;
+  margin-top: 40rpx;
+  padding-bottom: 40rpx;
+}