providerConfiguration is now a WgQuickConfig

Signed-off-by: Eric Kuck <eric@bluelinelabs.com>

WireGuard/WireGuard/ZipArchive/ZipExporter.swift

@@ -22,8 +22,8 @@ class ZipExporter {
             var inputsToArchiver: [(fileName: String, contents: Data)] = []
             var lastTunnelName: String = ""
             for tunnelConfiguration in tunnelConfigurations {
-                if let contents = WgQuickConfigFileWriter.writeConfigFile(from: tunnelConfiguration) {
-                    let name = tunnelConfiguration.interface.name
+                if let contents = tunnelConfiguration.asWgQuickConfig().data(using: .utf8) {
+                    let name = tunnelConfiguration.interface.name ?? ""
                     if name.isEmpty || name == lastTunnelName { continue }
                     inputsToArchiver.append((fileName: "\(name).conf", contents: contents))
                     lastTunnelName = name

WireGuard/WireGuard/ZipArchive/ZipImporter.swift

@@ -43,12 +43,8 @@ class ZipImporter {
                 if index > 0 && file == unarchivedFiles[index - 1] {
                     continue
                 }
-                guard let fileContents = String(data: file.contents, encoding: .utf8) else {
-                    continue
-                }
-                guard let tunnelConfig = try? WgQuickConfigFileParser.parse(fileContents, name: file.fileBaseName) else {
-                    continue
-                }
+                guard let fileContents = String(data: file.contents, encoding: .utf8) else { continue }
+                guard let tunnelConfig = try? TunnelConfiguration(fileContents, name: file.fileBaseName) else { continue }
                 configs[index] = tunnelConfig
             }
             DispatchQueue.main.async { completion(.success(configs)) }