Add .eof for token syntax

Author: kimdv

Sources/SwiftSyntaxBuilder/Tokens.swift.gyb

@@ -54,4 +54,6 @@ public extension TokenSyntax {
 %   end
 
 % end
+  /// The `eof` token
+  static let eof = SyntaxFactory.makeToken(.eof, presence: .present)
 }

Sources/SwiftSyntaxBuilder/gyb_generated/Tokens.swift

@@ -490,4 +490,6 @@ public extension TokenSyntax {
   /// The `yield` token
   static let `yield` = SyntaxFactory.makeYieldToken()
 
+  /// The `eof` token
+  static let eof = SyntaxFactory.makeToken(.eof, presence: .present)
 }