feat(web): update images

web/src/assets/images/common/plus_dark.svg

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="16px" height="16px" viewBox="0 0 16 16" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <title>编组 5</title>
+    <g id="空间里层页面优化" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd" stroke-linejoin="round">
+        <g id="应用管理-Agent-配置-提示词" transform="translate(-1180, -182)" stroke="#171719" stroke-width="1.2">
+            <g id="提示词" transform="translate(220, 89)">
+                <g id="副操作备份-2" transform="translate(952, 85)">
+                    <g id="编组-5" transform="translate(8, 8)">
+                        <path d="M3,8.17241379 L13,8.17241379 M8,3 L8,13" id="形状结合"></path>
+                    </g>
+                </g>
+            </g>
+        </g>
+    </g>
+</svg>