restructure runtime code

pkg/runtime/options.go

@@ -0,0 +1,30 @@
+package runtime
+
+import (
+	"github.com/micro/cli/v2"
+	"github.com/owncloud/ocis-pkg/v2/log"
+)
+
+// Options is a runtime option
+type Options struct {
+	Services []string
+	Logger   log.Logger
+	Context  *cli.Context
+}
+
+// Option undocummented
+type Option func(o *Options)
+
+// Services option
+func Services(s []string) Option {
+	return func(o *Options) {
+		o.Services = append(o.Services, s...)
+	}
+}
+
+// Context option
+func Context(c *cli.Context) Option {
+	return func(o *Options) {
+		o.Context = c
+	}
+}