pw_rpc: Module boilerplate

This change creates the pw_rpc module with all of the standard Pigweed
module boilerplate.

Change-Id: Iac3951a81a0edd286a8b1c7e19c614a7b73c0d07
diff --git a/pw_rpc/BUILD.gn b/pw_rpc/BUILD.gn
new file mode 100644
index 0000000..de98060
--- /dev/null
+++ b/pw_rpc/BUILD.gn
@@ -0,0 +1,45 @@
+# 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.
+
+import("$dir_pw_docgen/docs.gni")
+import("$dir_pw_unit_test/test.gni")
+
+config("default_config") {
+  include_dirs = [ "public" ]
+}
+
+source_set("pw_rpc") {
+  public_configs = [ ":default_config" ]
+  public_deps = [
+    dir_pw_assert,
+    dir_pw_span,
+  ]
+  public = [
+    "public/pw_rpc/channel.h",
+    "public/pw_rpc/server.h",
+  ]
+}
+
+pw_doc_group("docs") {
+  sources = [ "docs.rst" ]
+}
+
+pw_test_group("tests") {
+  tests = [ ":server_test" ]
+}
+
+pw_test("server_test") {
+  deps = [ ":pw_rpc" ]
+  sources = [ "server_test.cc" ]
+}