Much better allocation strategy with new ncore arenas. Add more builtin node gen stuff. It's kind of wonky.

Lexing.jai

@@ -572,6 +572,8 @@ lex :: (result : *Compile_Result) {
 
 	lexer : Lexer;
 	lexer.result = result;
+	lexer.result.tokens.allocator = result.allocator;
+	array_reserve(*lexer.result.tokens, 1024 * 1024);
 	
 	init_lexer_from_string(*lexer, result.file.source);
 	lexer.path = result.file.path;