util/file: allow context to be passed (#1950)

util/file/options.go

@@ -0,0 +1,15 @@
+package file
+
+import "context"
+
+type Options struct {
+	Context context.Context
+}
+
+type Option func(o *Options)
+
+func WithContext(ctx context.Context) Option {
+	return func(o *Options) {
+		o.Context = ctx
+	}
+}