Add support for Foxglove websocket protocol

Imports the foxglove websocket protocol library so
that I don't have to re-implement it--this also drags
in the websocketpp library, which is a bit awkward since
we also already have seasocks imported.

Change-Id: I1973eded827dda9d97a3dba271f8604705be3d1e
Signed-off-by: James Kuszmaul <james.kuszmaul@bluerivertech.com>
diff --git a/third_party/websocketpp/websocketpp.BUILD b/third_party/websocketpp/websocketpp.BUILD
new file mode 100644
index 0000000..ecf12cd
--- /dev/null
+++ b/third_party/websocketpp/websocketpp.BUILD
@@ -0,0 +1,11 @@
+# 3 Clause BSD
+licenses(["notice"])
+
+cc_library(
+    name = "com_github_zaphoyd_websocketpp",
+    hdrs = glob(["websocketpp/**/*.hpp"]),
+    defines = ["_WEBSOCKETPP_CPP11_STL_", "ASIO_STANDALONE"],
+    includes = ["."],
+    visibility = ["//visibility:public"],
+    deps = ["@asio"],
+)