add submodule and add conversion tests

Sources/KanaKanjiConverterModuleWithDefaultDictionary/KanaKanjiConverterModuleWithDefaultDictionary.swift

@@ -0,0 +1,50 @@
+@_exported import KanaKanjiConverterModule
+import Foundation
+
+public extension ConvertRequestOptions {
+    static func withDefaultDictionary(
+        N_best: Int = 10,
+        requireJapanesePrediction: Bool,
+        requireEnglishPrediction: Bool,
+        keyboardLanguage: KeyboardLanguage,
+        typographyLetterCandidate: Bool = false,
+        unicodeCandidate: Bool = true,
+        englishCandidateInRoman2KanaInput: Bool = false,
+        fullWidthRomanCandidate: Bool = false,
+        halfWidthKanaCandidate: Bool = false,
+        learningType: LearningType,
+        maxMemoryCount: Int = 65536,
+        shouldResetMemory: Bool = false,
+        memoryDirectoryURL: URL,
+        sharedContainerURL: URL,
+        textReplacer: TextReplacer = TextReplacer(),
+        metadata: ConvertRequestOptions.Metadata
+    ) -> Self {
+        #if os(iOS) || os(watchOS) || os(tvOS) || os(visionOS)
+        let dictionaryDirectory = Bundle.module.bundleURL.appendingPathComponent("Dictionary", isDirectory: true)
+        #elseif os(macOS)
+        let dictionaryDirectory = Bundle.module.resourceURL!.appendingPathComponent("Dictionary", isDirectory: true)
+        #else
+        let dictionaryDirectory = Bundle.module.resourceURL!.appendingPathComponent("Dictionary", isDirectory: true)
+        #endif
+        return Self(
+            N_best: N_best,
+            requireJapanesePrediction: requireJapanesePrediction,
+            requireEnglishPrediction: requireEnglishPrediction,
+            keyboardLanguage: keyboardLanguage,
+            typographyLetterCandidate: typographyLetterCandidate,
+            unicodeCandidate: unicodeCandidate,
+            englishCandidateInRoman2KanaInput: englishCandidateInRoman2KanaInput,
+            fullWidthRomanCandidate: fullWidthRomanCandidate,
+            halfWidthKanaCandidate: halfWidthKanaCandidate,
+            learningType: learningType,
+            maxMemoryCount: maxMemoryCount,
+            shouldResetMemory: shouldResetMemory,
+            dictionaryResourceURL: dictionaryDirectory,
+            memoryDirectoryURL: memoryDirectoryURL,
+            sharedContainerURL: sharedContainerURL,
+            textReplacer: textReplacer,
+            metadata: metadata
+        )
+    }
+}