cli: initial wsl control server

Adds an stdin/out json rpc server for wsl.

Exposes a singular install_local command to install+boot the vscode server on a port from a local archive.

Also refines the common rpc layer some more. I'm decently happy with it now.

cli/src/bin/code/main.rs

@@ -8,7 +8,7 @@ use std::process::Command;
 
 use clap::Parser;
 use cli::{
-	commands::{args, tunnels, update, version, CommandContext},
+	commands::{args, internal_wsl, tunnels, update, version, CommandContext},
 	constants::get_default_user_agent,
 	desktop, log as own_log,
 	state::LauncherPaths,
@@ -58,6 +58,9 @@ async fn main() -> Result<(), std::convert::Infallible> {
 			..
 		}) => match cmd {
 			args::StandaloneCommands::Update(args) => update::update(context, args).await,
+			args::StandaloneCommands::Wsl(args) => match args.command {
+				args::WslCommands::Serve => internal_wsl::serve(context).await,
+			},
 		},
 		args::AnyCli::Standalone(args::StandaloneCli { core: c, .. })
 		| args::AnyCli::Integrated(args::IntegratedCli { core: c, .. }) => match c.subcommand {