feat: Waku v2 bridge

Issue #12610

vendor/github.com/anacrolix/torrent/common/upverted_files.go

@@ -0,0 +1,18 @@
+package common
+
+import (
+	"github.com/anacrolix/torrent/metainfo"
+	"github.com/anacrolix/torrent/segments"
+)
+
+func LengthIterFromUpvertedFiles(fis []metainfo.FileInfo) segments.LengthIter {
+	i := 0
+	return func() (segments.Length, bool) {
+		if i == len(fis) {
+			return -1, false
+		}
+		l := fis[i].Length
+		i++
+		return l, true
+	}
+}