add utf8 and kim text encoder/decoders

tests/text_utf8.ce

@@ -0,0 +1,47 @@
+var text = use('text');
+var blob = use('blob');
+var utf8 = use('utf8');
+
+// Test blob to text conversion
+var test_string = "Hello, 世界! 🌍";
+var encoded_blob = utf8.encode(test_string);
+var decoded_text = text(encoded_blob);
+
+log.console("Blob to text test:");
+log.console("  Original:", test_string);
+log.console("  Decoded:", decoded_text);
+log.console("  Match:", test_string === decoded_text ? "PASS" : "FAIL");
+
+// Test array of codepoints conversion
+var codepoints = [72, 101, 108, 108, 111, 44, 32, 19990, 30028, 33, 32, 127757];
+var from_codepoints = text(codepoints);
+log.console("\nCodepoints to text test:");
+log.console("  From codepoints:", from_codepoints);
+log.console("  Match:", from_codepoints === test_string ? "PASS" : "FAIL");
+
+// Test array with separator
+var words = ["Hello", "world", "from", "text"];
+var joined = text(words, " ");
+log.console("\nArray with separator test:");
+log.console("  Joined:", joined);
+log.console("  Expected: Hello world from text");
+log.console("  Match:", joined === "Hello world from text" ? "PASS" : "FAIL");
+
+// Test mixed array with codepoints
+var mixed = [72, "ello", 32, "world"];
+var mixed_result = text(mixed, "");
+log.console("\nMixed array test:");
+log.console("  Result:", mixed_result);
+log.console("  Expected: Hello world");
+log.console("  Match:", mixed_result === "Hello world" ? "PASS" : "FAIL");
+
+// Test blob encoding formats still work
+var test_data = utf8.encode("ABC");
+log.console("\nBlob format tests:");
+log.console("  Hex:", text(test_data, "h"));
+log.console("  Binary:", text(test_data, "b"));
+log.console("  Octal:", text(test_data, "o"));
+
+log.console("\nAll tests completed!");
+
+$_.stop();