Implemented phase 1 for the POC prototype in the Website service.

Services/Website/Sources/Library/Internal/Enumerations/Format.swift

@@ -26,6 +26,26 @@ extension Format {
         }
     }
 
+    /// The format's name for one item.
+    var singular: String {
+        switch self {
+        case .singleIssues: "Single issue"
+        case .manga: "Manga"
+        case .tradePaperbacks: "Trade paperback"
+        case .hardcovers: "Hardcover"
+        }
+    }
+
+    /// What the format covers, in a sentence.
+    var summary: String {
+        switch self {
+        case .singleIssues: "Raw and slabbed, all eras. Filter by grade, print and key status."
+        case .manga: "Tankōbon volumes, box sets and first English printings."
+        case .tradePaperbacks: "Collected runs and one-shots, with printing noted on every copy."
+        case .hardcovers: "Omnibuses, deluxe editions and sealed copies."
+        }
+    }
+
     /// The path of the search screen filtered to the format.
     var path: String {
         "\(String.Route.search)?format=\(rawValue)"