Add packaging and release automation

vendor/github.com/charmbracelet/x/term/terminal.go

@@ -0,0 +1,12 @@
+package term
+
+import (
+	"io"
+)
+
+// File represents a file that has a file descriptor and can be read from,
+// written to, and closed.
+type File interface {
+	io.ReadWriteCloser
+	Fd() uintptr
+}