Re-add accidentally removed tca

public/typo3conf/ext/ep_theme/Configuration/TCA/Overrides/tt_content.php

@@ -5,6 +5,16 @@ defined('TYPO3_MODE') or die();
 call_user_func(function () {
 
     $ttContentColumns = [
+        'button' => [
+            'exclude' => 0,
+            'label' => 'Button Label',
+            'config' => [
+                'type' => 'input',
+                'default' => 'Details',
+                'size' => 30,
+                'eval' => 'trim,required'
+            ],
+        ],
         'tx_eptheme_context_country' => [
             'exclude' => 0,
             'label' => 'LLL:EXT:ep_products/Resources/Private/Language/locallang.xlf:tx_epproducts_domain_model_country',

public/typo3conf/ext/ep_theme/ext_tables.sql

@@ -158,6 +158,7 @@ CREATE TABLE pages
 
 CREATE TABLE tt_content
 (
+    button                       varchar(255)     DEFAULT ''  NOT NULL,
     tx_eptheme_context_country   int(11) unsigned DEFAULT '0',
     tx_eptheme_context_region    int(11) unsigned DEFAULT '0',
     tx_eptheme_context_city      int(11) unsigned DEFAULT '0',