Add vendor

Specifically because I want to modify a dependency

vendor/github.com/charmbracelet/x/input/paste.go

@@ -0,0 +1,12 @@
+package input
+
+// PasteEvent is an event that is emitted when a terminal receives pasted text
+// using bracketed-paste.
+type PasteEvent string
+
+// PasteStartEvent is an event that is emitted when a terminal enters
+// bracketed-paste mode.
+type PasteStartEvent struct{}
+
+// PasteEvent is an event that is emitted when a terminal receives pasted text.
+type PasteEndEvent struct{}