Cached TextBrush and FontFormat for Measure & Draw Text

[Softwaretom007]

Add D2DSolidColorTextBrush object and interface + extend MeasureText with D2DFontFormat fontFormat and D2DTextLayout textLayout + update Sample/MeasureAndDrawString + update FPS meter algorithm

MeasureAndDrawString yield 2x performance gain using cached SolidColorTextBrush and FontFormat.

[jingwood]

@Softwaretom007 Thank you very much!

[Softwaretom007]

Added more functionality (string layout, text antialiasing setup, optimized draw & fill rectangle and drawing unconnected lines - from array of points).

[jingwood]

Very appreciate it!