align parsing with upstream

Separate release group parsing logic into dedicated classes and update references throughout codebase.

(cherry picked from commit b00229e53c7a4bcb8684fd0aa4f66650c64a9a20)

Co-Authored-By: Mark McDowall <mark@mcdowall.ca>

src/NzbDrone.Core/Parser/ParserCommon.cs

@@ -0,0 +1,23 @@
+using System.Text.RegularExpressions;
+
+namespace NzbDrone.Core.Parser;
+
+// These are functions shared between different parser functions
+// they are not intended to be used outside of them parsing.
+internal static class ParserCommon
+{
+    internal static readonly RegexReplace[] PreSubstitutionRegex = System.Array.Empty<RegexReplace>();
+
+    // Valid TLDs http://data.iana.org/TLD/tlds-alpha-by-domain.txt
+    internal static readonly RegexReplace WebsitePrefixRegex = new (@"^(?:(?:\[|\()\s*)?(?:www\.)?[-a-z0-9-]{1,256}\.(?<!Naruto-Kun\.)(?:[a-z]{2,6}\.[a-z]{2,6}|xn--[a-z0-9-]{4,}|[a-z]{2,})\b(?:\s*(?:\]|\))|[ -]{2,})[ -]*",
+        string.Empty,
+        RegexOptions.IgnoreCase | RegexOptions.Compiled);
+
+    internal static readonly RegexReplace WebsitePostfixRegex = new (@"(?:\[\s*)?(?:www\.)?[-a-z0-9-]{1,256}\.(?:xn--[a-z0-9-]{4,}|[a-z]{2,6})\b(?:\s*\])$",
+        string.Empty,
+        RegexOptions.IgnoreCase | RegexOptions.Compiled);
+
+    internal static readonly RegexReplace CleanTorrentSuffixRegex = new (@"\[(?:ettv|rartv|rarbg|cttv|publichd)\]$",
+        string.Empty,
+        RegexOptions.IgnoreCase | RegexOptions.Compiled);
+}