feat: Begin cleaning up cli-client for better separation for current and next versions.

Sources/CliClient/Internal/CliClient+run.swift

@@ -96,10 +96,14 @@ public extension CliClient.SharedOptions {
   }
 }
 
+// TODO: Add optional property for currentVersion (loaded version from file)
+//       and rename version to nextVersion.
+
 @_spi(Internal)
 public struct CurrentVersionContainer: Sendable {
 
   let targetUrl: URL
+  let currentVersion: CurrentVersion?
   let version: Version
 
   var usesOptionalType: Bool {
@@ -109,8 +113,15 @@ public struct CurrentVersionContainer: Sendable {
     }
   }
 
+  public enum CurrentVersion: Sendable {
+    case branch(String, usesOptionalType: Bool)
+    case semvar(SemVar, usesOptionalType: Bool)
+  }
+
   public enum Version: Sendable {
+    // TODO: Call this branch for consistency.
     case string(String)
+    // TODO: Remove has changes when currentVersion/nextVersion is implemented.
     case semvar(SemVar, usesOptionalType: Bool = true, hasChanges: Bool)
 
     func string(allowPreReleaseTag: Bool) throws -> String {