Extract test controls from resources to code

[ArtemTatarinov]

Some items at some forms (ListViewTest, TreeViewTest) of our internal test application (WinformsControlsTest) are created from the resources:

These items are not visible at the Managed Resources Editor:

We should extract the creation of such items from the resx-files to the direct code initialization to make their properties readable, simplify their modification if needed, etc.