✨ feat: Add streaming support (#125)

This adds:
- [x] Keyboard and mouse handling on the frontend
- [x] Video and audio streaming from the backend to the frontend
- [x] Input server that works with Websockets

Update - 17/11
- [ ] Master docker container to run this
- [ ] Steam runtime
- [ ] Entrypoint.sh

---------

Co-authored-by: Kristian Ollikainen <14197772+DatCaptainHorse@users.noreply.github.com>
Co-authored-by: Kristian Ollikainen <DatCaptainHorse@users.noreply.github.com>

Containerfile.relay

@@ -0,0 +1,20 @@
+FROM docker.io/golang:1.23-alpine AS go-build
+WORKDIR /builder
+COPY packages/relay/ /builder/
+RUN go build
+
+FROM docker.io/golang:1.23-alpine
+COPY --from=go-build /builder/relay /relay/relay
+WORKDIR /relay
+
+# ENV flags
+ENV VERBOSE=false
+ENV ENDPOINT_PORT=8088
+ENV WEBRTC_UDP_START=10000
+ENV WEBRTC_UDP_END=20000
+ENV STUN_SERVER="stun.l.google.com:19302"
+
+EXPOSE $ENDPOINT_PORT
+EXPOSE $WEBRTC_UDP_START-$WEBRTC_UDP_END/udp
+
+ENTRYPOINT ["/relay/relay"]