Camera: added setters for depth and stencil clear value.

src/Camera.h

@@ -78,6 +78,27 @@ class MAGNUM_EXPORT Camera: public Object {
             glClearColor(color.r(), color.g(), color.b(), color.a());
         }
 
+        /**
+         * @brief Set clear depth
+         *
+         * Initial value is `1.0`.
+         */
+        inline static void setClearDepth(GLdouble depth) { glClearDepth(depth); }
+
+        /**
+         * @overload
+         *
+         * @requires_gl41 Extension @extension{ARB,ES2_compatibility}
+         */
+        inline static void setClearDepth(GLfloat depth) { glClearDepthf(depth); }
+
+        /**
+         * @brief Set clear stencil
+         *
+         * Initial value is `0`.
+         */
+        inline static void setClearStencil(GLint stencil) { glClearStencil(stencil); }
+
         /**
          * @brief Constructor
          * @param parent        Parent object