FancyZones and Shortcut Guide initial commit

Co-authored-by: Alexis Campailla <alexis@janeasystems.com>
Co-authored-by: Bret Anderson <bretan@microsoft.com>
Co-authored-by: Enrico Giordani <enrico.giordani@gmail.com>
Co-authored-by: Jaime Bernardo <jaime@janeasystems.com>
Co-authored-by: Jeff Bogdan <jeffbog@microsoft.com>
Co-authored-by: March Rogers <marchr@microsoft.com>
Co-authored-by: Mike Harsh <mharsh@microsoft.com>
Co-authored-by: Nachum Bundak <Nachum.Bundak@microsoft.com>
Co-authored-by: Oliver Jones <ojones@microsoft.com>
Co-authored-by: Patrick Little <plittle@microsoft.com>

src/common/animation.h

@@ -0,0 +1,31 @@
+#pragma once
+#include <chrono>
+
+/*
+  Usage:
+    When creating animation contstructor takes one parameter - how long
+    should the animation take in seconds.
+
+    Call reset() when starting animation.
+
+    When redering, call value() to get value from 0 to 1 - depending on animation
+    progress.
+*/
+class Animation {
+public:
+  enum AnimFunctions {
+    LINEAR = 0,
+    EASE_OUT_EXPO
+  };
+
+  Animation(double duration = 1, double start = 0, double stop = 1);
+  void reset();
+  void reset(double duration);
+  void reset(double duration, double start, double stop);
+  double value(AnimFunctions apply_function) const;
+  bool done() const;
+private:
+  double apply_animation_function(double t, AnimFunctions apply_function) const;
+  std::chrono::high_resolution_clock::time_point start;
+  double start_value, end_value, duration;
+};