Add screen slider component

CHDataManagement/Generator/KnownHeaderElement.swift

@@ -1,19 +1,25 @@
 
-enum KnownHeaderElement: Int {
+enum KnownHeaderElement {
 
-    case codeHightlighting = 4
+    case codeHightlighting
 
-    case modelViewer = 3
+    case modelViewer
 
     /// CSS File to style the audio player
-    case audioPlayerCss = 1
+    case audioPlayerCss
 
     /// JavaScript file for the audio player
-    case audioPlayerJs = 2
+    case audioPlayerJs
 
-    case imageCompareJs = 5
+    case imageCompareJs
 
-    case imageCompareCss = 6
+    case imageCompareCss
+
+    case swiperCss
+
+    case swiperJs
+
+    case style(String)
 
     func header(content: Content) -> HeaderElement? {
         switch self {
@@ -41,15 +47,32 @@ enum KnownHeaderElement: Int {
             if let file = content.settings.pages.imageCompareCssFile {
                 return .css(file: file, order: HeaderElement.imageCompareCssOrder)
             }
+        case .swiperCss:
+            if let swiperCss = content.settings.posts.swiperCssFile {
+                return .css(file: swiperCss, order: HeaderElement.swiperCssFileOrder)
+            }
+        case .swiperJs:
+            if let swiperJs = content.settings.posts.swiperJsFile {
+                return .js(file: swiperJs, defer: true)
+            }
+        case .style(let code):
+            return .style(code)
         }
         return nil
     }
 }
 
-extension KnownHeaderElement: Comparable {
+extension KnownHeaderElement: Equatable {
 
-    static func < (lhs: KnownHeaderElement, rhs: KnownHeaderElement) -> Bool {
-        lhs.rawValue < rhs.rawValue
+    static func == (lhs: KnownHeaderElement, rhs: KnownHeaderElement) -> Bool {
+        lhs.description == rhs.description
+    }
+}
+
+extension KnownHeaderElement: Hashable {
+
+    func hash(into hasher: inout Hasher) {
+        hasher.combine(description)
     }
 }
 
@@ -69,6 +92,12 @@ extension KnownHeaderElement: CustomStringConvertible {
             return "image-compare-js"
         case .imageCompareCss:
             return "image-compare-css"
+        case .swiperCss:
+            return "swiper-css"
+        case .swiperJs:
+            return "swiper-js"
+        case .style(let style):
+            return "style: " + style
         }
     }
 }