Add single file audio player, introduce blocks

CHDataManagement/Extensions/String+Extensions.swift

@@ -9,6 +9,13 @@ extension String {
             .replacingOccurrences(of: ">", with: ">")
     }
 
+    func percentDecoded() -> String {
+        guard let decoded = removingPercentEncoding else {
+            return self
+        }
+        return decoded
+    }
+
     var removingSurroundingQuotes: String {
         if hasPrefix("\"") && hasSuffix("\"") {
             return dropBeforeFirst("\"").dropAfterLast("\"")
@@ -85,6 +92,14 @@ extension String {
     func between(_ start: String, and end: String) -> String {
         dropBeforeFirst(start).dropAfterFirst(end)
     }
+
+    /**
+     Split the string at the first occurence of the separator
+     */
+    func splitAtFirst(_ separator: String) -> (String, String) {
+        let parts = components(separatedBy: separator)
+        return (parts.first!, parts.dropFirst().joined(separator: separator))
+    }
 }
 
 extension String {
@@ -129,4 +144,12 @@ extension Substring {
     func last(after: String) -> String {
         components(separatedBy: after).last!
     }
+
+    /**
+     Split the string at the first occurence of the separator
+     */
+    func splitAtFirst(_ separator: String) -> (String, String) {
+        let parts = components(separatedBy: separator)
+        return (parts.first!, parts.dropFirst().joined(separator: separator))
+    }
 }