Move entities and managers back to Common (#431)

src/Spout/Writer/Common/Entity/Options.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Box\Spout\Writer\Common\Entity;
+
+/**
+ * Class Options
+ * Writer' options holder
+ *
+ * @package Box\Spout\Writer\Common\Entity
+ */
+abstract class Options
+{
+    // CSV specific options
+    const FIELD_DELIMITER = 'fieldDelimiter';
+    const FIELD_ENCLOSURE = 'fieldEnclosure';
+    const SHOULD_ADD_BOM = 'shouldAddBOM';
+
+    // Multisheets options
+    const TEMP_FOLDER = 'tempFolder';
+    const DEFAULT_ROW_STYLE = 'defaultRowStyle';
+    const SHOULD_CREATE_NEW_SHEETS_AUTOMATICALLY = 'shouldCreateNewSheetsAutomatically';
+
+    // XLSX specific options
+    const SHOULD_USE_INLINE_STRINGS = 'shouldUseInlineStrings';
+}