add all old corelib tests

object-test/strings.c

@@ -0,0 +1,24 @@
+#include <blue/core/stringstream.h>
+#include <blue/object/string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void)
+{
+	b_string *str = b_string_create_from_cstr("Hello, world!\n");
+	b_string_insert_cstr(str, "WOW!", 4);
+
+	printf("%s\n", b_string_ptr(str));
+
+	b_string_release(str);
+
+	b_stringstream strv;
+	b_stringstream_begin_dynamic(&strv);
+	b_stringstream_add_many(&strv, "Hello", ", world", "!", NULL);
+	char *s = b_stringstream_end(&strv);
+
+	printf("%s\n", s);
+	free(s);
+
+	return 0;
+}