Otherwise, we end up propagating those dependencies into targets that
link against that library, which creates unnecessary link-time
dependencies.
Also included are changes to readd now missing dependencies to tools
that actually need them.
We previously put the generated headers in SOURCES, which did not mark
them as GENERATED (and did not produce a proper dependency).
This commit moves all generated headers into GENERATED_SOURCES, and
removes useless header SOURCES.
When compiling with Lagom, we give both LibWebSocket and the WebSocket
IPC service the Lagom:: prefix as an alias, but strip the Lib from all
library target names before applying the prefix. This creates a conflict
when external projects used the aliased name between the server and the
library. Give WebSocket a name that deconflicts it, but keep the binary
name the same, /bin/WebSocket.
The WebSocket service isolates communication with a WebSocket to its
own isolated process. Similar to other isolating services, it has its
own user and group.
