Add Serial logging support

game/conf.lua

@@ -0,0 +1,7 @@
+function love.conf(t)
+    t.console = true
+    if t.dos then
+        t.dos.console = "COM1"
+        -- t.dos.console = "c:\\test.log"
+    end
+end

run_dosbox.ps1

@@ -7,7 +7,9 @@ $cpu = $env:DOSBOX_X_CPU ?? "pentium_ii"
 
 RunProgram -program $dosbox_x -arguments "-nopromptfolder",
     "-fastlaunch",
+    "-console",
     "-set", "`"cputype=$cpu`"",
+    "-set", "`"serial1=log`"",
     "-c", "`"MOUNT C $(Resolve-Path "./lovedos/") `"",
     "-c", "`"MOUNT D $pwd `"",
     "-c", "`"c:\love.exe d:\game `"",