Port RSHTMLTag and RSOMLFeedSpecifier to Swift.

Modules/Parser/Sources/Parser/HTML/HTMLTag.swift

@@ -0,0 +1,24 @@
+//
+//  HTMLTag.swift
+//
+//
+//  Created by Brent Simmons on 8/18/24.
+//
+
+import Foundation
+
+public struct HTMLTag: Sendable {
+
+	public enum HTMLTagType {
+		case link
+		case meta
+	}
+
+	public let tagType: HTMLTagType
+	public let attributes: [String: String]?
+
+	public init(tagType: TagType, attributes: [String : String]?) {
+		self.tagType = tagType
+		self.attributes = attributes
+	}
+}