Fixing hang when closing server with live client due to client instance context
throwing an exception when closing.

Adding interface project.

Removing older solution file.

Adding interface library.

Adding server closing notification to clients.

Now support duplex mode with new client.

Adding server method to set all texts at once.

Adding our client implementation. Moving server into its own folder.

Adding WCF server implementation.

Adding option to reverse screen. That's useful to avoid having to set our
hardware the correct way up.