[FEATURE REQUEST] Custom DDS loader

[xypwn]

Is your feature request related to a problem? Please describe.

• DDS files are currently converted via ImageMagick. Writing a custom loader would completely cut that dependency.

Describe the solution you'd like

• Pure Go implementation of a DDS loader.

Describe alternatives you've considered There exists a Go DDS library with several forks (e.g. https://github.com/robroyd/dds), but none support the encoding/compression HD2 uses.

Additional context Common format info for HD2 DDS files:

• FOURCC == "DX10"
• Implementation may be based on ImageMagick (https://github.com/ImageMagick/ImageMagick/blob/main/coders/dds.c#L2663)

[xypwn]

Done d1559091878f95e403b804c255913eb68e326728