Add a basic branch iterator for getting branches state

branch_test.go

@@ -0,0 +1,18 @@
+package main
+
+import (
+	"fmt"
+	"testing"
+
+	git "github.com/libgit2/git2go/v30"
+)
+
+func TestBranches(t *testing.T) {
+	repo, err := git.OpenRepository("/home/grdl/workspace/gitlab.com/grdl/git-get")
+	checkFatal(t, err)
+
+	branches, err := Branches(repo)
+	checkFatal(t, err)
+
+	fmt.Println(len(branches))
+}