feat: add support for new exclude expressions in use rule statements

Introduced by snakemake/snakemake#1717

snakefmt/parser/syntax.py

@@ -246,11 +246,11 @@ def validate_userule_syntax(self, snakefile: TokenIterator):
         identifier = r"[a-zA-Z_]\S*"
         use_syntax_regexp = (
             r"use rule (?:(?:{id})|\*)"
-            r"(?: from {id})?(?: as {id})?( with[ ]?:)?$".format(id=identifier)
+            r"(?: from {id})?(?: exclude {id}( *, *{id})*)?(?: as {id})?( with[ ]?:)?$".format(id=identifier)
         )
         use_ebnf_syntax = (
             '"use" "rule" (identifier | "*") '
-            '"from" identifier ["as" identifier] ["with" ":"]'
+            '"from" identifier ["exclude" identifier {"," identifier}] ["as" identifier] ["with" ":"]'
         )
         while not is_newline(self.token):
             if self.token.type == tokenize.COMMENT: