debug/profile: move to profiler interface

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

profiler/profile.go

@@ -0,0 +1,43 @@
+// Package profile is for profilers
+package profile
+
+type Profile interface {
+	// Start the profiler
+	Start() error
+	// Stop the profiler
+	Stop() error
+	// Name of the profiler
+	String() string
+}
+
+var (
+	DefaultProfile Profile = &NoopProfile{}
+)
+
+type NoopProfile struct{}
+
+func (p *NoopProfile) Start() error {
+	return nil
+}
+
+func (p *NoopProfile) Stop() error {
+	return nil
+}
+
+func (p *NoopProfile) String() string {
+	return "noop"
+}
+
+type Options struct {
+	// Name to use for the profile
+	Name string
+}
+
+type Option func(o *Options)
+
+// Name of the profile
+func Name(n string) Option {
+	return func(o *Options) {
+		o.Name = n
+	}
+}