add Total() and TotalGo()

common.go

@@ -160,3 +160,17 @@ func (rl *RepoList) MirrorShownCount() *gui.Node {
 func (rl *RepoList) MirrorScanDuration() *gui.Node {
 	return gui.RawMirror(rl.duration)
 }
+
+func (rl *RepoList) Total() int {
+	return len(me.allrepos)
+}
+
+func (rl *RepoList) TotalGo() int {
+	var count int
+	for _, repo := range me.allrepos {
+		if repo.Status.IsGoLang() {
+			count += 1
+		}
+	}
+	return count
+}