Added endpoint to add a contact

internal/handler/helper.go

@@ -4,6 +4,17 @@ import "encoding/json"
 import "log"
 import "net/http"
 
+
+func ExtractFromRequest(r *http.Request, reqItem interface{}) error {
+	err := json.NewDecoder(r.Body).Decode(&reqItem)
+	if err != nil {
+		return err
+	} else {
+		return nil
+	}
+}
+
+
 // Helper function to send JSON responses
 func RespondWithJSON(w http.ResponseWriter, statusCode int, data interface{}) {
 	w.Header().Set("Content-Type", "application/json")