add PageSegmenterOptions abstract class

src/UglyToad.PdfPig.DocumentLayoutAnalysis/PageSegmenter/PageSegmenterOptions.cs

@@ -0,0 +1,20 @@
+namespace UglyToad.PdfPig.DocumentLayoutAnalysis.PageSegmenter
+{
+    /// <summary>
+    /// Abstract page segmenter options.
+    /// </summary>
+    public abstract class PageSegmenterOptions : DlaOptions
+    {
+        /// <summary>
+        /// Separator used between words when building lines.
+        /// <para>Default value is ' ' (space).</para>
+        /// </summary>
+        public string WordSeparator { get; set; } = " ";
+
+        /// <summary>
+        /// Separator used between lines when building paragraphs.
+        /// <para>Default value is '\n' (new line).</para>
+        /// </summary>
+        public string LineSeparator { get; set; } = "\n";
+    }
+}