(Experimental): implemented IPT composite images.

use LEX/YACC to parse IPT files.

Experimental/Artemis/IPT.Language.analyzer.lex

@@ -0,0 +1,33 @@
+%namespace GameRes.Formats.Artemis
+%scannertype IPTScanner
+%visibility internal
+%tokentype Token
+
+%option stack, minimize, parser, verbose, persistbuffer, noembedbuffers 
+
+Space		[ \t\v\n\f]
+Number		[0-9]+
+
+%{
+
+%}
+
+%%
+
+{Space}+		/* skip */
+
+{Number}		{ GetNumber(); return (int)Token.NUMBER; }
+
+\"(\\.|[^\\"\n])*\"	{ GetStringLiteral(); return (int)Token.STRING_LITERAL; }
+
+[a-zA-Z]+		{ yylval.s = yytext; return (int)Token.IDENTIFIER; }
+
+"{"			{ return '{'; }
+
+"}"			{ return '}'; }
+
+"="			{ return '='; }
+
+","			{ return ','; }
+
+%%