make: Update with dedicated RegG parser

Makefile

 PY = $(wildcard *.py)
-GRMS=DFA NFA CFG RegEx
+GRMS=DFA NFA CFG RegG RegEx
 
 -include local.make
 
@@ -19,9 +19,14 @@ test: typecheck unit
 
 grammars : $(GRMS:%=lib/parser/%Parser.py)
 
-$(GRMS:%=lib/parser/%Parser.py) : lib/parser/%Parser.py : lib/parser/%.g4 lib/parser/FA.g4
+$(GRMS:%=lib/parser/%Parser.py) : lib/parser/%Parser.py : lib/parser/%.g4
 	antlr4 -Dlanguage=Python3 -visitor $<
 	@# let's be a bit more permissive for versions
 	sed -i '/self.checkVersion(".*")/d' $(@:%Parser.py=%*.py)
 
+FA_PARSER=DFA NFA
+$(FA_PARSER:%=lib/parser/%Parser.py) : lib/parser/FA.g4
+
+lib/parser/RegG.g4 : lib/parser/CFG.g4
+
 .PHONY: %.mypy typecheck test unit all grammars