Removes the separate language server binary; I'm not sure we need to
provide it. Instead, `carbon language-server` is added as a subcommand.
Moves //language_server to //toolchain/language_server. Splits into a
trivial language_server.h, and a substantive server.h. I wasn't sure
about a better name, but wanted the split similar to check/check.h,
lex/lex.h, etc. At the same time, the class is probably going to be a
little big so not a good fit to through into just a cpp file.
This fixes some style issues with the language server class, but
generally I'm trying to not address things here in order to keep it
simpler.
Following a short discussion on Discord about where to locate developer tools, I suggest we collect developer utils inside a `/utils` directory at the repository root.
The idea behind this directory is taken from LLVM's utils directories in the various LLVM subprojects which host tooling such as Vim and VSCode extensions, utility scripts, and other useful bits for developers developing or using LLVM.
This patch moves the highlightjs code into said utils directory.
Let me know if there's anything else that's missing 😄
cc @jonmeow
Jon Ross-Perkins
maan2003
Mats Larsen