Introduce XCBeautifier (#250)

Author: cpisciotta

Sources/XcbeautifyLib/XCBeautifier.swift

@@ -0,0 +1,23 @@
+import Foundation
+
+public struct XCBeautifier {
+    private let parser: Parser
+
+    public init(
+        colored: Bool,
+        renderer: Renderer,
+        preserveUnbeautifiedLines: Bool,
+        additionalLines: @escaping () -> String?
+    ) {
+        parser = Parser(
+            colored: colored,
+            renderer: renderer,
+            preserveUnbeautifiedLines: preserveUnbeautifiedLines,
+            additionalLines: additionalLines
+        )
+    }
+
+    public func format(line: String) -> String? {
+        parser.parse(line: line)
+    }
+}