feat: Working on updates to sem var and git client.

Sources/CliVersion/SemVar.swift

@@ -0,0 +1,108 @@
+import Foundation
+
+// Container for sem-var version.
+@_spi(Internal)
+public struct SemVar: CustomStringConvertible, Equatable, Sendable {
+  /// The major version.
+  public let major: Int
+  /// The minor version.
+  public let minor: Int
+  /// The patch version.
+  public let patch: Int
+  /// Extra pre-release tag.
+  public let preRelease: String?
+
+  public init(
+    major: Int,
+    minor: Int,
+    patch: Int,
+    preRelease: String? = nil
+  ) {
+    self.major = major
+    self.minor = minor
+    self.patch = patch
+    self.preRelease = preRelease
+  }
+
+  public init(preRelease: String? = nil) {
+    self.init(
+      major: 0,
+      minor: 0,
+      patch: 0,
+      preRelease: preRelease
+    )
+  }
+
+  public init?(string: String) {
+    let parts = string.split(separator: ".")
+    guard parts.count >= 3 else {
+      return nil
+    }
+    let major = Int(String(parts[0].replacingOccurrences(of: "\"", with: "")))
+    let minor = Int(String(parts[1]))
+
+    let patchParts = parts[2].split(separator: "-")
+    let patch = Int(patchParts.first ?? "0")
+    let preRelease = String(patchParts.dropFirst().joined(separator: "-"))
+
+    self.init(
+      major: major ?? 0,
+      minor: minor ?? 0,
+      patch: patch ?? 0,
+      preRelease: preRelease
+    )
+  }
+
+  public var description: String { versionString() }
+
+  // Create a version string, optionally appending a suffix.
+  public func versionString(withPreReleaseTag: Bool = true) -> String {
+    let string = "\(major).\(minor).\(patch)"
+
+    guard withPreReleaseTag else { return string }
+
+    guard let suffix = preRelease, suffix.count > 0 else {
+      return string
+    }
+
+    if !suffix.hasPrefix("-") {
+      return "\(string)-\(suffix)"
+    }
+
+    return "\(string)\(suffix)"
+  }
+
+  // Bumps the sem-var by the given option (major, minor, patch)
+  public func bump(_ option: CliClient.BumpOption) -> Self {
+    switch option {
+    case .major:
+      return .init(
+        major: major + 1,
+        minor: 0,
+        patch: 0,
+        preRelease: preRelease
+      )
+    case .minor:
+      return .init(
+        major: major,
+        minor: minor + 1,
+        patch: 0,
+        preRelease: preRelease
+      )
+    case .patch:
+      return .init(
+        major: major,
+        minor: minor,
+        patch: patch + 1,
+        preRelease: preRelease
+      )
+    }
+  }
+}
+
+@_spi(Internal)
+public extension GitClient.Version {
+  var semVar: SemVar? {
+    .init(string: description)
+  }
+}