add search settings sample

samples/search-settings-test.lua

@@ -0,0 +1,19 @@
+-- type = "search"
+
+settings_init = false
+
+function on_search()
+    if not settings_init then
+        search:show_buttons{ "Set settings" }
+    else
+        search:show_buttons{ "Result #1", "Result #2" }
+    end
+end
+
+function on_click(idx)
+    if not settings_init then
+        settings:show_dialog()
+    else
+        -- main work
+    end
+end