feat: Integrates configuration-client.

Sources/cli-version/ConfigurationExtensions.swift

@@ -0,0 +1,61 @@
+import ConfigurationClient
+import Dependencies
+import FileClient
+import Foundation
+
+extension Configuration {
+
+  func mergingTarget(_ otherTarget: Configuration.Target?) -> Self {
+    .init(
+      target: otherTarget ?? target,
+      strategy: strategy
+    )
+  }
+
+  func mergingStrategy(_ otherStrategy: Configuration.VersionStrategy?) -> Self {
+    .init(
+      target: target,
+      strategy: strategy?.merging(otherStrategy)
+    )
+  }
+}
+
+extension Configuration.Branch {
+  func merging(_ other: Self?) -> Self {
+    return .init(includeCommitSha: other?.includeCommitSha ?? includeCommitSha)
+  }
+}
+
+extension Configuration.SemVar {
+  func merging(_ other: Self?) -> Self {
+    .init(
+      preRelease: other?.preRelease ?? preRelease,
+      requireExistingFile: other?.requireExistingFile ?? requireExistingFile,
+      requireExistingSemVar: other?.requireExistingSemVar ?? requireExistingSemVar
+    )
+  }
+}
+
+extension Configuration.VersionStrategy {
+  func merging(_ other: Self?) -> Self {
+    guard let branch else {
+      guard let semvar else { return self }
+      return .init(semvar: semvar.merging(other?.semvar))
+    }
+    return .init(branch: branch.merging(other?.branch))
+  }
+}
+
+@discardableResult
+func withConfiguration<T>(
+  path: String?,
+  _ operation: (Configuration) async throws -> T
+) async throws -> T {
+  @Dependency(\.configurationClient) var configurationClient
+
+  let configuration = try await configurationClient.findAndLoad(
+    path != nil ? URL(filePath: path!) : nil
+  )
+
+  return try await operation(configuration)
+}