Framework/starter code for S3/MinIO bucket object lambda

Signed-off-by: Ethan Wellenreiter <ewellenreiter@gmail.com>

backend/bucket_lambdas/minio_image_preview/main.go

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+package main
+
+func init() {
+
+}
+
+func transformImage() {
+
+	// imgtransform.ResizeImage(,10, 10)
+}
+
+func main() {
+
+}

backend/bucket_lambdas/plan.txt

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+Will use minio or s3 lambda object transform functions. This can be used to get thumbnail or other sized images so that the full s3 doesn't have to be used.

backend/bucket_lambdas/s3_image_preview/main.go

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+package main
+

backend/shared/image_transform/imgtransform.go

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+package imgtransform
+
+import (
+	"bytes"
+	"image"
+
+	"github.com/nfnt/resize"
+)
+
+func BytesToImage(data []byte) (image.Image, error) {
+	image, _, err := image.Decode(bytes.NewReader(data))
+	return image, err
+}
+
+func ResizeImage(img image.Image, width uint, height uint) image.Image {
+	return resize.Resize(width, height, img, resize.Lanczos3)
+}