refactor: Move the related configuration items to the Common library.

src/ZonyLrcTools.Common/Lyrics/LineBreakType.cs

@@ -0,0 +1,23 @@
+namespace ZonyLrcTools.Common.Lyrics
+{
+    /// <summary>
+    /// 换行符格式定义。
+    /// </summary>
+    public static class LineBreakType
+    {
+        /// <summary>
+        /// Windows 系统。
+        /// </summary>
+        public const string Windows = "\r\n";
+
+        /// <summary>
+        /// macOS 系统。
+        /// </summary>
+        public const string MacOs = "\r";
+
+        /// <summary>
+        /// UNIX 系统(Linux)。
+        /// </summary>
+        public const string Unix = "\n";
+    }
+}