Add lever and jump pad components with activation logic

examples/edge_shader/edge_shader.gdshader

@@ -0,0 +1,16 @@
+shader_type canvas_item;
+/**
+ * This shader fixes normal textures looking wrong when used with SmartShape2D.
+ * See: https://github.com/SirRamEsq/SmartShape2D/blob/master/addons/rmsmartshape/documentation/Normals.md
+ */
+
+varying mat2 NORMAL_MATRIX;
+
+void vertex() {
+	NORMAL_MATRIX = mat2(COLOR.rg, COLOR.ba) * 2.0 - mat2(vec2(1.0), vec2(1.0));
+}
+
+void fragment() {
+	NORMAL.xy = NORMAL_MATRIX * NORMAL.xy;
+	COLOR = texture(TEXTURE, UV);
+}