pw_kvs: Move test; disable dumping to file

- Move long-running Put test to a separate file.
- Do not dump the KVS state to file by default to prevent files from
  showing up when the tests run.

Change-Id: Ie466d06aa3e22819cad03713e866afae5c63cbe6
diff --git a/pw_kvs/BUILD b/pw_kvs/BUILD
index 9f267b0..522325c 100644
--- a/pw_kvs/BUILD
+++ b/pw_kvs/BUILD
@@ -91,6 +91,17 @@
 )
 
 pw_cc_test(
+    name = "key_value_store_fuzz_test",
+    srcs = ["key_value_store_fuzz_test.cc"],
+    deps = [
+        ":crc16",
+        ":in_memory_fake_flash",
+        ":pw_kvs",
+        "//pw_checksum",
+    ],
+)
+
+pw_cc_test(
     name = "key_value_store_test",
     srcs = ["key_value_store_test.cc"],
     deps = [