Feat macos (#2)

---------

Co-authored-by: intelligence <intelligence@debian.local>
Co-authored-by: jourintown <jourintown@proton.me>
Reviewed-on: #2

macos/Tests/TransuiTests/TranscriptCleanerTests.swift

@@ -0,0 +1,30 @@
+import XCTest
+
+@testable import Transui
+
+final class TranscriptCleanerTests: XCTestCase {
+  func testRemovesAsTextPrefix() {
+    XCTAssertEqual(
+      TranscriptCleaner.clean("language English<astext>Hello there"),
+      "Hello there"
+    )
+  }
+
+  func testRemovesAsrTextPrefix() {
+    XCTAssertEqual(
+      TranscriptCleaner.clean("language zh <asr_text>你好"),
+      "你好"
+    )
+  }
+
+  func testRemovesPrefixAfterWhitespaceAndBom() {
+    XCTAssertEqual(
+      TranscriptCleaner.clean("\u{FEFF} \n\tlanguage English<astext>Hello"),
+      "Hello"
+    )
+  }
+
+  func testPreservesOrdinaryTranscript() {
+    XCTAssertEqual(TranscriptCleaner.clean("language is useful"), "language is useful")
+  }
+}