[PATCH v2] windowscodecs: Add stub implementation for DDS encoder.

[Ziqing Hui]

Signed-off-by: Ziqing Hui <zhui(a)codeweavers.com>
---

v2: * Get rid of encoder_info.
    * Use FIXME in QueryInterface.

 dlls/windowscodecs/clsfactory.c               |   1 +
 dlls/windowscodecs/ddsformat.c                | 198 ++++++++++++++++++
 dlls/windowscodecs/wincodecs_private.h        |   1 +
 dlls/windowscodecs/windowscodecs_wincodec.idl |   7 +
 4 files changed, 207 insertions(+)