refactor: Replace shell script with Swift CLI for artifact bundling

Sources/TailwindCSSCLIArtifactBundler/Models.swift

@@ -0,0 +1,53 @@
+import Foundation
+
+// MARK: - Artifact Bundle Info Models
+
+/// Represents the info.json file structure for an artifact bundle
+struct ArtifactBundleInfo: Codable {
+  let schemaVersion: String
+  let artifacts: [String: Artifact]
+
+  enum CodingKeys: String, CodingKey {
+    case schemaVersion, artifacts
+  }
+}
+
+struct Artifact: Codable {
+  let version: String
+  let type: String
+  let variants: [ArtifactVariant]
+}
+
+struct ArtifactVariant: Codable {
+  let path: String
+  let supportedTriples: [String]
+}
+
+// MARK: - Artifact Bundle Index Models
+
+/// Represents the .artifactbundleindex file structure
+struct ArtifactBundleIndex: Codable {
+  let schemaVersion: String
+  let bundles: [Bundle]
+}
+
+struct Bundle: Codable {
+  let fileName: String
+  let checksum: String
+  let supportedTriples: [String]
+}
+
+// MARK: - Internal Data Models
+
+/// Configuration for a binary platform
+struct BinaryConfiguration {
+  let binaryName: String
+  let triple: String
+}
+
+/// Information about a created bundle
+struct BundleInfo {
+  let fileName: String
+  let checksum: String
+  let triple: String
+}