console服务增加启动snax服务功能

输入：
svc  -> 用snlua启动svc服务
snax svc -> 用snax启动svc服务

service/console.lua

@@ -1,13 +1,26 @@
 local skynet = require "skynet"
+local snax   = require "snax"
 local socket = require "socket"
 
+local function split_cmdline(cmdline)
+	local split = {}
+	for i in string.gmatch(cmdline, "%S+") do
+		table.insert(split,i)
+	end
+	return split
+end
+
 local function console_main_loop()
 	local stdin = socket.stdin()
 	socket.lock(stdin)
 	while true do
 		local cmdline = socket.readline(stdin, "\n")
-		if cmdline ~= "" then
-			pcall(skynet.newservice,cmdline)
+		local split = split_cmdline(cmdline)
+		local command = split[1]
+		if command == "snax" then
+			pcall(snax.newservice, select(2, table.unpack(split)))
+		elseif cmdline ~= "" then
+			pcall(skynet.newservice, cmdline)
 		end
 	end
 	socket.unlock(stdin)