chore: vendor clipboard into go package

packages/tui/clipboard/clipboard_nocgo.go

@@ -0,0 +1,25 @@
+//go:build !windows && !darwin && !linux && !cgo
+
+package clipboard
+
+import "context"
+
+func initialize() error {
+	return errNoCgo
+}
+
+func read(t Format) (buf []byte, err error) {
+	panic("clipboard: cannot use when CGO_ENABLED=0")
+}
+
+func readc(t string) ([]byte, error) {
+	panic("clipboard: cannot use when CGO_ENABLED=0")
+}
+
+func write(t Format, buf []byte) (<-chan struct{}, error) {
+	panic("clipboard: cannot use when CGO_ENABLED=0")
+}
+
+func watch(ctx context.Context, t Format) <-chan []byte {
+	panic("clipboard: cannot use when CGO_ENABLED=0")
+}