implementation of custom Exporter/Tracker

- RegisterTracker to allow for custom trackers to be implemented beyond Jira/Github/Gitlab
- RegisterExporter to allow for custom exporters to be implemented beyond Sarif/Disk

v2/pkg/reporting/reporting.go

@@ -98,6 +98,10 @@ type Client struct {
 
 // New creates a new nuclei issue tracker reporting client
 func New(options *Options, db string) (*Client, error) {
+	if options == nil {
+		return nil, errors.New("no options passed")
+	}
+
 	if options.AllowList != nil {
 		options.AllowList.Compile()
 	}
@@ -141,6 +145,7 @@ func New(options *Options, db string) (*Client, error) {
 		}
 		client.exporters = append(client.exporters, exporter)
 	}
+
 	storage, err := dedupe.New(db)
 	if err != nil {
 		return nil, err
@@ -149,6 +154,16 @@ func New(options *Options, db string) (*Client, error) {
 	return client, nil
 }
 
+// RegisterTracker registers a custom tracker to the reporter
+func (c *Client) RegisterTracker(tracker Tracker) {
+	c.trackers = append(c.trackers, tracker)
+}
+
+// RegisterExporter registers a custom exporter to the reporter
+func (c *Client) RegisterExporter(exporter Exporter) {
+	c.exporters = append(c.exporters, exporter)
+}
+
 // Close closes the issue tracker reporting client
 func (c *Client) Close() {
 	c.dedupe.Close()