Diagnostic Tools debugger window in Visual Studio 2015

Introduces the new Diagnostic Tools window in Visual Studio 2015, unifying the Output window, IntelliTrace, and the Performance and Diagnostics hub. The window provides a timeline with graphs for break events, IntelliTrace events, CPU Usage, and Memory Usage. It allows for automatic time range selection based on debugging actions (breakpoints, stepping) and manual selection via clicking on events or dragging on the timeline. The IntelliTrace experience is enhanced to capture debug messages from the Output window and enable historical debugging. The Memory Usage tool is integrated into the debugging experience, allowing snapshots before and after debug actions. Debugger PerfTips are now visible in the Diagnostic Tools window, and CPU Usage graphs can be correlated with code running between breakpoints.