Add command for pretty page links

Sources/Generator/Templates/Elements/PageLinkTemplate.swift

@@ -0,0 +1,22 @@
+import Foundation
+
+struct PageLinkTemplate: Template {
+
+    enum Key: String, CaseIterable {
+        case url = "URL"
+        case image = "IMAGE"
+        case image2x = "IMAGE_2X"
+        case title = "TITLE"
+        case path = "PATH"
+        case description = "DESCRIPTION"
+        case className = "CLASS"
+    }
+
+    static let templateName = "page-link.html"
+
+    let raw: String
+
+    func makePath(components: [String]) -> String {
+        components.joined(separator: " » ") //  » ")
+    }
+}