Add vendor

Specifically because I want to modify a dependency

vendor/github.com/charmbracelet/x/windows/syscall_windows.go

@@ -0,0 +1,10 @@
+package windows
+
+import "golang.org/x/sys/windows"
+
+var NewLazySystemDLL = windows.NewLazySystemDLL
+
+type Handle = windows.Handle
+
+//sys GetKeyboardLayout(threadId uint32) (hkl Handle, err error) = user32.GetKeyboardLayout
+//sys ToUnicodeEx(vkey uint32, scancode uint32, keystate *byte, pwszBuff *uint16, cchBuff int32, flags uint32, hkl Handle) (ret int32, err error) = user32.ToUnicodeEx