Add keyboard markup tests and constructors to objects

src/TgBotLib/Objects/ForceReply.php

@@ -11,6 +11,16 @@
         private ?string $inline_field_placeholder;
         private bool $selective;
 
+        /**
+         * ForceReply constructor.
+         */
+        public function __construct()
+        {
+            $this->force_reply = false;
+            $this->inline_field_placeholder = null;
+            $this->selective = false;
+        }
+
         /**
          * Shows reply interface to the user, as if they manually selected the bot's message and tapped 'Reply'
          *