Add Access-Control-Allow-Origin header to response

[JervenBolleman]

To make it easier to develop JS webapps against sparql-proxy we set the CORS header to '*'. There is a cors config to turn it off

[ursm]

Thank you for your suggestion. We will already provide the same functionality through cors() express middleware. Isn't it working as you expected?

sparql-proxy/src/server.js

Line 78 in 9372652

router.all('/sparql', cors(), multer().array(), async (req, res) => {

[JervenBolleman]

We where confused because these are not set on error pages such as 404.