Add vendor

Specifically because I want to modify a dependency

vendor/github.com/charmbracelet/bubbletea/inputreader_other.go

@@ -0,0 +1,14 @@
+//go:build !windows
+// +build !windows
+
+package tea
+
+import (
+	"io"
+
+	"github.com/muesli/cancelreader"
+)
+
+func newInputReader(r io.Reader) (cancelreader.CancelReader, error) {
+	return cancelreader.NewReader(r)
+}