feat: suport for the new lexer and if/else structures

src/parser/parsing_utils.h

@@ -11,7 +11,8 @@ struct ast *parse_if_rule(void);
  */
 struct ast *parse_shell_command(void);
 
-/*
+/* @brief parses commands inside if/else clauses and returns the corresponding
+ * AST list
  */
 struct ast* parse_compound_list(void);
 
@@ -21,4 +22,4 @@ struct ast* parse_and_or(void);
 
 /*
  */
-struct ast* else_clause(void);
+struct ast* parse_else_clause(void);