Introduce inheritable Profiles and Managers

- There's always a single Profile choosen
- There are many Managers changing settings
  depending on environment
- Improve and re-use mappings between profiles
- Introduce Steam Profile to be used when
  in Steam Big Picture or Steam Game

SteamController/ContextDebug.cs

@@ -0,0 +1,58 @@
+using CommonHelpers;
+
+namespace SteamController
+{
+    public partial class Context
+    {
+        List<string> debugLastItems = new List<string>();
+
+        public void Debug()
+        {
+            var items = new List<string>();
+
+            if (DesktopMode)
+                items.Add("[DESKTOP]");
+            else
+                items.Add("[CONTROLLER]");
+
+            if (Steam.LizardButtons)
+                items.Add("[LB]");
+            if (Steam.LizardMouse)
+                items.Add("[LM]");
+            if (X360.Connected)
+                items.Add("[X360]");
+            else if (X360.Valid)
+                items.Add("[no-X360]");
+
+            foreach (var button in Steam.AllButtons)
+            {
+                if (button is null || !button.LastValue)
+                    continue;
+
+                String text = button.Name;
+                if (button.Consumed is not null)
+                    text += String.Format("[{0}]", button.Consumed);
+                if (button.Value)
+                    text += "[P]";
+
+                items.Add(text);
+            }
+
+            foreach (var key in Keyboard.DownKeys)
+            {
+                items.Add(String.Format("Key{0}", key));
+            }
+
+            foreach (var mouse in Mouse.DownButtons)
+            {
+                items.Add(String.Format("Mouse{0}", mouse));
+            }
+
+            if (!items.SequenceEqual(debugLastItems))
+            {
+                Log.TraceLine("DEBUG: {0}", String.Join(" ", items));
+                debugLastItems = items;
+            }
+        }
+    }
+}