Allow ! and ... as start-of-type tokens

Which allows the rest of the jsdoc types to be used in type argument
lists

Author: sandersn

src/compiler/parser.ts

@@ -2722,6 +2722,8 @@ namespace ts {
                 case SyntaxKind.ObjectKeyword:
                 case SyntaxKind.AsteriskToken:
                 case SyntaxKind.QuestionToken:
+                case SyntaxKind.ExclamationToken:
+                case SyntaxKind.DotDotDotToken:
                     return true;
                 case SyntaxKind.MinusToken:
                     return lookAhead(nextTokenIsNumericLiteral);