Implemented the "currentFolder" property for the FileService service in the Library target.

Sources/Library/Protocols/FileServicing.swift

@@ -0,0 +1,9 @@
+import Foundation
+
+protocol FileServicing {
+    
+    // MARK: Properties
+    
+    var currentFolder: URL { get async }
+    
+}

Sources/Library/Services/FileService.swift

@@ -0,0 +1,27 @@
+import Foundation
+
+struct FileService: FileServicing {
+
+    // MARK: Properties
+    
+    private let fileManager: FileManager
+    
+    // MARK: Initialisers
+    
+    init(fileManager: FileManager = .default) {
+        self.fileManager = fileManager
+    }
+    
+    // MARK: Computed
+    
+    var currentFolder: URL {
+        get async {
+            if #available(macOS 13.0, *) {
+                .init(filePath: fileManager.currentDirectoryPath)
+            } else {
+                .init(fileURLWithPath: fileManager.currentDirectoryPath)
+            }
+        }
+    }
+    
+}