meta: rename legacy object module to 'ds'

test/cat.c

@@ -1,7 +1,7 @@
 #include <blue/core/stream.h>
 #include <blue/io/file.h>
 #include <blue/io/path.h>
-#include <blue/object/string.h>
+#include <blue/ds/string.h>
 #include <stdio.h>
 
 int main(int argc, const char **argv)

test/json-read.c

@@ -26,7 +26,7 @@ int main(int argc, const char **argv)
 	b_serial_ctx *ctx;
 	b_serial_ctx_create(&ctx);
 
-	b_object *data;
+	b_dsref *data;
 	b_status status = b_serial_ctx_deserialise(
 		ctx, B_SERIAL_FORMAT_JSON, src_stream, &data, 0);
 	if (!B_OK(status)) {
@@ -34,7 +34,7 @@ int main(int argc, const char **argv)
 		return -1;
 	}
 
-	b_to_string(B_OBJECT(data), b_stdout);
+	b_to_string(B_DSREF(data), b_stdout);
 	b_stream_write_char(b_stdout, '\n');
 
 	b_release(data);