[NTOS:INBV] Code refactoring: Move all the boot animation-specific code out of inbv.c and into the new bootanim.c file.

- inbv.c now only contains the Inbv-specific API and nothing else.

- It will make easier for people to write their own boot themes & animations,
  by just copying/adapting the bootanim.c file (and the resources).

- Add SAL annotations.

- All INBV progress bar functions (except for InbvIndicateProgress())
  should not be INIT-only functions, since they can be (not yet in ROS)
  used at later times -- namely, for feedback during hibernation.

sdk/include/ndk/inbvtypes.h

@@ -41,14 +41,14 @@ typedef enum _INBV_DISPLAY_STATE
 typedef
 BOOLEAN
 (NTAPI *INBV_RESET_DISPLAY_PARAMETERS)(
-    ULONG Cols,
-    ULONG Rows
+    _In_ ULONG Cols,
+    _In_ ULONG Rows
 );
 
 typedef
 VOID
 (NTAPI *INBV_DISPLAY_STRING_FILTER)(
-    PCHAR *Str
+    _Inout_ PCHAR* String
 );
 
 #endif