increased max header and body size to better support large requests and a reverse proxy

[PaulKobow7536]

We need a larger body size, because some of our requests are larger than vertex default We need larger Header size to support large Authentication headers in a simple reverse proxy

[jonrosner]

Thanks for your MR. I won't add this as the default behavior but adding an option to increase the max body and header size is fine for me. So you can add a new environment variable. Check Main.kt.

[PaulKobow7536]

Hey i added the requested changes. Would you mind having a look?

[jonrosner]

LGTM

[jonrosner]

I deployed the new container to :nightly. Please check if it works for you.