separated into modules, added parser and lexer for miniImp

dune-project

@@ -4,6 +4,20 @@
 
 (generate_opam_files true)
 
+(using menhir 3.0)
+
 (package
- (name lang)
+ (name utility)
+ (depends ocaml dune))
+
+(package
+ (name miniImp)
+ (depends ocaml dune utility))
+
+(package
+ (name miniFun)
+ (depends ocaml dune utility))
+
+(package
+ (name exercises)
  (depends ocaml dune))