feat: Create backups of configuration when the force option is not used.

Sources/FileClient/FileClient.swift

@@ -23,6 +23,9 @@ public struct FileClient: Sendable {
   /// Create a directory at the given location.
   public var createDirectory: @Sendable (URL) async throws -> Void
 
+  /// Delete the item at the given location.
+  public var delete: @Sendable (URL) async throws -> Void
+
   /// Check if a file exists at the given location.
   public var fileExists: @Sendable (URL) -> Bool = { _ in true }
 
@@ -57,6 +60,7 @@ extension FileClient: DependencyKey {
     return .init(
       copy: { try await manager.copy($0, to: $1) },
       createDirectory: { try await manager.creatDirectory($0) },
+      delete: { try await manager.delete($0) },
       fileExists: { manager.fileExists(at: $0) },
       findVaultFile: { try await manager.findVaultFile(in: $0) },
       homeDirectory: { manager.homeDirectory() },
@@ -79,6 +83,10 @@ struct LiveFileClient: Sendable {
     try manager.createDirectory(at: url, withIntermediateDirectories: true)
   }
 
+  func delete(_ url: URL) async throws {
+    try manager.removeItem(at: url)
+  }
+
   func fileExists(at url: URL) -> Bool {
     manager.fileExists(atPath: url.cleanFilePath)
   }