[Windows] Added support of watchpoints to NativeProcessWindows
Summary: This patch adds support of watchpoints to the new NativeProcessWindows plugin. The same tests as in D67168 pass with these changes when the old plugin is turned off, so they will cover this functionality when the old plugin is gone.
Reviewers: asmith, amccarth, stella.stamenova, labath
Reviewed By: labath
Subscribers: labath, jfb, JDevlieghere, lldb-commits, leonid.mashinskiy
Differential Revision: https://reviews.llvm.org/D67222