feat(package): hemar: antlr grammar, but still does not work

package/hemar/grammar/antlr/HemarParser.g4

@@ -0,0 +1,18 @@
+parser grammar HemarParser;
+
+options { tokenVocab=HemarLexer; }
+
+hemar   : element*? EOF ;
+
+element
+  : TEXT
+  | segment
+  | interpoltion
+  ;
+
+segment      : for element*? end;
+
+for : LeftBrace For Path In Path RightBrace;
+end : LeftBrace End RightBrace;
+
+interpoltion : LeftBrace Path RightBrace;