feat: Adds vault client

Tests/PlaybookClientTests/PlaybookClientTests.swift

@@ -1,6 +1,6 @@
 import CodersClient
 @_spi(Internal) import CommandClient
-import ConfigurationClient
+@_spi(Internal) import ConfigurationClient
 import Dependencies
 import FileClient
 import Foundation
@@ -12,12 +12,6 @@ import TestSupport
 @Suite("PlaybookClientTests")
 struct PlaybookClientTests: TestCase {
 
-  static let loggingOptions: LoggingOptions = {
-    let levelString = ProcessInfo.processInfo.environment["LOG_LEVEL"] ?? "debug"
-    let logLevel = Logger.Level(rawValue: levelString) ?? .debug
-    return .init(commandName: "PlaybookClientTests", logLevel: logLevel)
-  }()
-
   static var sharedRunOptions: PlaybookClient.RunPlaybook.SharedRunOptions {
     .init(loggingOptions: loggingOptions)
   }
@@ -268,15 +262,6 @@ extension Result where Failure == TestError {
   static var failing: Self { .failure(TestError()) }
 }
 
-extension ConfigurationClient {
-  static func mock(_ configuration: Configuration) -> Self {
-    var mock = Self.testValue
-    mock.find = { throw TestError() }
-    mock.load = { _ in configuration }
-    return mock
-  }
-}
-
 struct TestError: Error {}
 
 extension Tag {