Add admin password check (#847)

Fixes #846

src/web/interface/ConnectionBase.h

@@ -41,6 +41,7 @@ protected:
 public:
     std::string const clientIp;
     bool upgraded = false;
+    bool isAdmin_ = false;
 
     /**
      * @brief Create a new connection base.
@@ -85,5 +86,16 @@ public:
     {
         return ec_ != boost::system::error_code{};
     }
+
+    /**
+     * @brief Indicates whether the connection has admin privileges
+     *
+     * @return true if the connection is from admin user
+     */
+    [[nodiscard]] bool
+    isAdmin() const
+    {
+        return isAdmin_;
+    }
 };
 }  // namespace web