Detach memory inspection panes from main Insight window

[navnavnav]

It would be nice if we could detach a particular memory inspection pane from the Insight window, so that it becomes a new window and is no longer constrained to the size of the Insight window.

[navnavnav]

Quick update on this:

Development work for this is almost complete.

Memory inspection panes can now be detached from the main window:

To do:

• Persist attached/detached state, as well as detached window size and position, across debug sessions (these properties will be saved in the current project's settings)
• Prevent inspection panes from needlessly refreshing memory data post activation

[navnavnav]

Development work for this is complete.

It didn't make sense to have the refresh button in the HexViewerWidget, and given that I intend to reuse the HexViewerWidget for snapshot diffs, I decided to move the button to the MemoryInspectionPane widget, which is where it should have been in the first place.

Additional refresh configuration, accessible via a context menu of the refresh tool button (by right-clicking the refresh button):

Also updated the 'Manage Memory Regions' tool button icon, to make it more distinct.

These changes have been merged into develop. They will be part of v0.11.0. Closing this now.