Deployment index page

[trkks]

• Serve module's data files from its "index" page. This allows supervisors to e.g. respond with HTML for human clients
• Remove bunch of routes that AFAIK haven't been used for quite some time
• Add more allowed file types

[trkks]

Merge itself from upstream was OK, although composing up with the <orchestrator>/examples/icwe23-demo.sh script I got an error:

...

Step 6/20 : RUN --mount=type=cache,target=/var/cache/apt     apt-get update && export DEBIAN_FRONTEND=noninteractive     && apt-get -y install --no-install-recommends libgpiod2
the --mount option requires BuildKit. Refer to https://docs.docker.com/go/buildkit/ to learn how to build images with BuildKit enabled

and had to edit said script with environment variables (source) and install buildx.

A problem now seems to be, that orchestrator cannot find devices. Could the mDNS advertisements have been broken? EDIT: Got it. Fixing tomorrow myself if anyone else doesn't get to it before.