sdl3-image: add SDL3_image 3.4.4

SDL3-native image loading library (libSDL3_image), built directly
against SDL3 so it coexists with sdl2-image's libSDL2_image. PNG, JPEG,
TIFF and WebP are handled by the libpng, libjpeg, libtiff and libwebp
packages, listed as dependencies so the cross-built target libraries
are used instead of host libraries; the bundled stb backend is disabled.

https://github.com/libsdl-org/SDL_image/releases/tag/release-3.4.4
Signed-off-by: Daniel Golle <daniel@makrotopia.org>

libs/sdl3-image/Makefile

@@ -0,0 +1,52 @@
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=sdl3-image
+PKG_VERSION:=3.4.4
+PKG_RELEASE:=1
+
+PKG_SOURCE:=SDL3_image-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=https://codeload.github.com/libsdl-org/SDL_image/tar.gz/release-$(PKG_VERSION)?
+PKG_HASH:=b0c11bbde540e26d1cedf31174349fe6ab67e57658efe22e16e75172859c817d
+
+PKG_BUILD_DIR:=$(BUILD_DIR)/SDL_image-release-$(PKG_VERSION)
+
+PKG_MAINTAINER:=Daniel Golle <daniel@makrotopia.org>
+PKG_LICENSE:=Zlib
+PKG_LICENSE_FILES:=LICENSE.txt
+
+CMAKE_INSTALL:=1
+
+include $(INCLUDE_DIR)/package.mk
+include $(INCLUDE_DIR)/cmake.mk
+
+CMAKE_BINARY_SUBDIR:=openwrt-build
+
+CMAKE_OPTIONS += \
+	-DSDLIMAGE_SAMPLES=OFF \
+	-DSDLIMAGE_TESTS=OFF \
+	-DSDLIMAGE_INSTALL=ON \
+	-DSDLIMAGE_VENDORED=OFF \
+	-DSDLIMAGE_DEPS_SHARED=OFF \
+	-DSDLIMAGE_BACKEND_STB=OFF \
+	-DSDLIMAGE_PNG=ON \
+	-DSDLIMAGE_PNG_LIBPNG=ON \
+	-DSDLIMAGE_JPG=ON \
+	-DSDLIMAGE_TIF=ON \
+	-DSDLIMAGE_WEBP=ON \
+	-DSDLIMAGE_AVIF=OFF \
+	-DSDLIMAGE_JXL=OFF
+
+define Package/libsdl3-image
+  SECTION:=libs
+  CATEGORY:=Libraries
+  TITLE:=SDL3 Image
+  URL:=https://www.libsdl.org/
+  DEPENDS:=+libsdl3 +libpng +libjpeg +libtiff +libwebp
+endef
+
+define Package/libsdl3-image/install
+	$(INSTALL_DIR) $(1)/usr/lib
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libSDL3_image*.so* $(1)/usr/lib/
+endef
+
+$(eval $(call BuildPackage,libsdl3-image))