Multipart form data server support

[fokot]

Is your feature request related to a problem? Please describe.
Server can accept and parse Multipart form data requests.

Describe the solution you'd like
Something nice

Describe alternatives you've considered
We can either use https://netty.io/4.0/api/io/netty/handler/codec/http/multipart/InterfaceHttpPostRequestDecoder.html or parse it ourselves in ZIO streams.

[fokot]

It looks it needs to be added here https://github.com/zio/zio-http/blob/main/zio-http/src/main/scala/zio/http/netty/server/ServerInboundHandler.scala#L124

[fokot]

I will work on it

[tusharmath]

There are two ways we can implement it —

1. Using Netty's multipart-decoder
2. Using ZIO Parser

We can also decode a FullHttpRequest or an HttpRequest where the body is a stream.

In my opinion, we should move fast on this issue by implementing a non-streaming solution first and decoding it with netty's multipart decoder. That will perform the decoding in memory at once. So it won't work for very large files, but at least build some multipart support in the library.

[Tasselmi]

hi, my friends. any update?