Releasing the former Stadia file transfer tools

The tools allow efficient and fast synchronization of large directory
trees from a Windows workstation to a Linux target machine.

cdc_rsync* support efficient copy of files by using content-defined
chunking (CDC) to identify chunks within files that can be reused.

asset_stream_manager + cdc_fuse_fs support efficient streaming of a
local directory to a remote virtual file system based on FUSE. It also
employs CDC to identify and reuse unchanged data chunks.

tests_asset_streaming_30/BUILD

@@ -0,0 +1,48 @@
+package(default_visibility = ["//visibility:public"])
+
+# Using a cc_binary rule here to avoid that this test is included when running
+# test from bazel directly. This target is just a convenience target for all the
+# unit tests in the scope run from Visual Studio, thus running the following
+# command would execute all tests twice:
+#
+# bazel test --build_tests_only //...
+#
+# To run this target with Bazel directly, just use "bazel run" instead of
+# "bazel test".
+cc_binary(
+    name = "tests_asset_streaming_30",
+    testonly = True,
+    srcs = [
+        "//asset_stream_manager:all_test_sources",
+        "//cdc_fuse_fs:all_test_sources",
+        "//data_store:all_test_sources",
+        "//manifest:all_test_sources",
+        "//metrics:all_test_sources",
+    ],
+    data = [
+        "//asset_stream_manager:all_test_data",
+        "//manifest:all_test_data",
+    ],
+    deps = [
+        "//asset_stream_manager:metrics_recorder",
+        "//asset_stream_manager:multi_session",
+        "//cdc_fuse_fs:asset",
+        "//cdc_fuse_fs:cdc_fuse_fs_lib_mocked",
+        "//common:test_main",
+        "//common:testing_clock",
+        "//data_store:data_provider",
+        "//data_store:disk_data_store",
+        "//data_store:mem_data_store",
+        "//manifest:content_id",
+        "//manifest:fake_manifest_builder",
+        "//manifest:manifest_builder",
+        "//manifest:manifest_iterator",
+        "//manifest:manifest_printer",
+        "//manifest:manifest_proto_defs",
+        "//manifest:manifest_test_base",
+        "//manifest:manifest_updater",
+        "//metrics",
+        "//metrics:enums",
+        "//metrics:messages",
+    ],
+)