Implement gzip compression for cad artifacts

The stls from CadQuery and OpenSCAD are not compressed and so we're
throwing away bandwidth and taking a performance hit by not gziping.

Gzip for s3 basically needs to be gziped before upload and than have

'content-type'      :  'text/stl'
'content-encoding'  :  'gzip'
set.

https://stackoverflow.com/questions/8080824/how-to-serve-gzipped-assets-from-amazon-s3

The obvious part that needs to change is putObject in
app/api/src/docker/common/utils.js but there might be a few more
nuances.

resolves #391

app/web/src/helpers/cadPackages/cadQueryController.js

@@ -9,7 +9,7 @@ import {
 export const render = async ({ code }) => {
   const body = JSON.stringify({
     settings: {
-      deflection: 0.2,
+      deflection: 0.15,
     },
     file: code,
   })