pw_kvs: Add to build; get tests passing

Change-Id: Idfd357beaf60b94ebaf9b4b1f8cd1b3d712e9b10
diff --git a/pw_kvs/BUILD b/pw_kvs/BUILD
new file mode 100644
index 0000000..b646357
--- /dev/null
+++ b/pw_kvs/BUILD
@@ -0,0 +1,66 @@
+# Copyright 2020 The Pigweed Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+
+load(
+    "//pw_build:pigweed.bzl",
+    "pw_cc_library",
+    "pw_cc_test",
+)
+
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])  # Apache License 2.0
+
+pw_cc_library(
+    name = "pw_kvs",
+    srcs = [
+        "flash.cc",
+        "key_value_store.cc",
+    ],
+    hdrs = [
+        "public/pw_kvs/assert.h",
+        "public/pw_kvs/flash.h",
+        "public/pw_kvs/flash_memory.h",
+        "public/pw_kvs/in_memory_fake_flash.h",
+        "public/pw_kvs/key_value_store.h",
+        "public/pw_kvs/partition_table_entry.h",
+    ],
+    includes = ["public"],
+    deps = [
+        "//pw_checksum",
+        "//pw_log",
+        "//pw_status",
+        "//pw_string",
+    ],
+)
+
+pw_cc_test(
+    name = "key_value_store_test",
+    srcs = ["key_value_store_test.cc"],
+    deps = [
+        ":pw_kvs",
+        "//pw_checksum",
+        "//pw_log",
+    ],
+)
+
+pw_cc_test(
+    name = "key_value_store_sub_sector_test",
+    srcs = ["key_value_store_sub_sector_test.cc"],
+    deps = [
+        ":pw_kvs",
+        "//pw_checksum",
+        "//pw_log",
+    ],
+)