websocket rpc + users in config + small code structure changes #4

Job	Run time
Build and upload (Linux-x86_64, ubuntu-20.04, x86_64-unknown-linux-musl, ELF.+x86-64, --no-expect...	5m 50s
Build and upload (Linux-aarch64, ubuntu-20.04, aarch64-unknown-linux-musl, aarch64, --expect-cros...	6m 14s
Build and upload (Linux-arm, ubuntu-20.04, arm-unknown-linux-musleabi, 32.+ARM, --expect-cross, -...	6m 34s
Build and upload (Linux-i686, ubuntu-20.04, i686-unknown-linux-musl, ELF.+80386, --expect-cross, ...	6m 18s
Build and upload (macOS-x86_64, macOS-latest, x86_64-apple-darwin, Mach-O.+x86_64, --no-expect-cr...	5m 16s
Build and upload (macOS-aarch64, macOS-latest, aarch64-apple-darwin, Mach-O.+arm64, --no-expect-c...	5m 50s
	36m 2s

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