Implement an API for performance monitoring

Signed-off-by: Alexei Dodon <adodon@cisco.com>

pkg/exporter/api/controller.go

@@ -0,0 +1,21 @@
+// +build minimal
+
+package api
+
+import (
+	"github.com/anuvu/zot/pkg/log"
+)
+
+type Controller struct {
+	Config *Config
+	Log    log.Logger
+}
+
+func NewController(cfg *Config) *Controller {
+	logger := log.NewLogger(cfg.Exporter.Log.Level, cfg.Exporter.Log.Output)
+	return &Controller{Config: cfg, Log: logger}
+}
+
+func (c *Controller) Run() {
+	runExporter(c)
+}