Initial QSfera import

Server/vendor/github.com/davidbyttow/govips/v2/vips/image.c

@@ -0,0 +1,16 @@
+#include "image.h"
+
+int has_alpha_channel(VipsImage *image) { return vips_image_hasalpha(image); }
+
+void clear_image(VipsImage **image) {
+  // Reference-counting in libvips: https://www.libvips.org/API/current/using-from-c.html#using-C-ref
+  // https://docs.gtk.org/gobject/method.Object.unref.html
+  if (G_IS_OBJECT(*image)) g_object_unref(*image);
+}
+
+VipsImage *create_image_from_memory_copy(const void *data, size_t size,
+                                          int width, int height, int bands,
+                                          VipsBandFormat format) {
+  return vips_image_new_from_memory_copy(data, size, width, height, bands,
+                                          format);
+}