LibGfx: Add Path::clear

Author: https://github.com/mattco98
Commit: b6c884d20c
Pull-request: https://github.com/SerenityOS/serenity/pull/7436
Reviewed-by: https://github.com/alimpfard

Userland/Libraries/LibGfx/Path.h

@@ -176,6 +176,12 @@ public:
         return m_split_lines.value();
     }
 
+    void clear()
+    {
+        m_segments.clear();
+        m_split_lines.clear();
+    }
+
     const Gfx::FloatRect& bounding_box()
     {
         if (!m_bounding_box.has_value()) {