Move Windows console hack into constrained file to fix Linux build

.gitignore

@@ -15,3 +15,4 @@
 # Dependency directories (remove the comment below to include it)
 # vendor/
 
+.lumerc

cmd/lume/init_windows.go

@@ -0,0 +1,19 @@
+// +build windows
+
+// https://stackoverflow.com/a/52579002
+
+package main
+
+import (
+	"os"
+
+	"golang.org/x/sys/windows"
+)
+
+func init() {
+	stdout := windows.Handle(os.Stdout.Fd())
+	var originalMode uint32
+
+	windows.GetConsoleMode(stdout, &originalMode)
+	windows.SetConsoleMode(stdout, originalMode|windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING)
+}

cmd/lume/main.go

@@ -9,20 +9,11 @@ import (
 	lifx "git.kill0.net/chill9/lume"
 	lumecmd "git.kill0.net/chill9/lume/cmd"
 	"github.com/BurntSushi/toml"
-
-	"golang.org/x/sys/windows"
 )
 
 const lumercFile = ".lumerc"
 
 func main() {
-	var originalMode uint32
-	stdout := windows.Handle(os.Stdout.Fd())
-
-	windows.GetConsoleMode(stdout, &originalMode)
-	windows.SetConsoleMode(stdout, originalMode|windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING)
-	defer windows.SetConsoleMode(stdout, originalMode)
-
 	var config lumecmd.Config
 	config = loadConfig()