Perlcritic overhaul, apply to Teapot lib too

lib/Teapot/Bot/Object/CallbackGame.pm

@@ -1,6 +1,11 @@
 package Teapot::Bot::Object::CallbackGame;
 # ABSTRACT: The base class for Telegram message 'CallbackGame' type.
 
+use strict;
+use warnings;
+use 5.018; ## no critic (ProhibitImplicitImport)
+use utf8;
+
 use Mojo::Base 'Teapot::Bot::Object::Base';
 $Teapot::Bot::Object::CallbackGame::VERSION = '0.022';
 
@@ -8,7 +13,7 @@ $Teapot::Bot::Object::CallbackGame::VERSION = '0.022';
 # "A placeholder, currently holds no information. Use BotFather to set up your game"
 
 sub fields {
-  return { },
+  return { };
 }
 
 1;
@@ -17,7 +22,7 @@ __END__
 
 =pod
 
-=encoding UTF-8
+=encoding utf8
 
 =head1 NAME
 
@@ -31,7 +36,7 @@ version 0.022
 The base class for Telegram message 'CallbackGame' type.
 
 See L<https://core.telegram.org/bots/api#callbackgame> for details of the
-attributes available for L<Teapot::Bot::Object::CallbackGame> objects.
+attributes available for C<Teapot::Bot::Object::CallbackGame> objects.
 
 =head1 AUTHOR