Add google-cloud-cpp package (#3099)

* Initial port for google-cloud-cpp

* Use pre-release tag instead of commit sha1.

* Fix version.

* [google-cloud-cpp] Portfile improvements

* [google-cloud-cpp] Update to 0.1.0

ports/google-cloud-cpp/CONTROL

@@ -0,0 +1,4 @@
+Source: google-cloud-cpp
+Version: 0.1.0
+Build-Depends: grpc, gtest
+Description: C++ Client Libraries for Google Cloud Platform APIs.

ports/google-cloud-cpp/portfile.cmake

@@ -0,0 +1,44 @@
+if (VCPKG_LIBRARY_LINKAGE STREQUAL dynamic)
+    message(STATUS "Warning: Dynamic building not supported yet. Building static.")
+    set(VCPKG_LIBRARY_LINKAGE static)
+endif()
+
+include(vcpkg_common_functions)
+
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO GoogleCloudPlatform/google-cloud-cpp
+    REF v0.1.0
+    SHA512 3947cc24ca1ed97309f055f17945afe2d6b22ae8f54f86d3395f8c491b7409d4b7bb12206889d04d07f51236e9fd5afd65b904c8c80521a3313588d8069545c2
+    HEAD_REF master
+)
+
+set(GOOGLEAPIS_VERSION 92f10d7033c6fa36e1a5a369ab5aa8bafd564009)
+vcpkg_download_distfile(GOOGLEAPIS
+    URLS "https://github.com/google/googleapis/archive/92f10d7033c6fa36e1a5a369ab5aa8bafd564009.zip"
+    FILENAME "googleapis-${GOOGLEAPIS_VERSION}.zip"
+    SHA512 4280ece965a231f6a0bb3ea38a961d15babd9eac517f9b0d57e12f186481bbab6a27e4f0ee03ba3c587c9aa93d3c2e6c95f67f50365c65bb10594f0229279287
+)
+
+file(REMOVE_RECURSE ${SOURCE_PATH}/third_party)
+vcpkg_extract_source_archive(${GOOGLEAPIS} ${SOURCE_PATH}/third_party)
+file(RENAME ${SOURCE_PATH}/third_party/googleapis-${GOOGLEAPIS_VERSION} ${SOURCE_PATH}/third_party/googleapis)
+
+vcpkg_configure_cmake(
+    SOURCE_PATH ${SOURCE_PATH}
+    PREFER_NINJA
+    OPTIONS
+        -DGOOGLE_CLOUD_CPP_GRPC_PROVIDER=vcpkg
+        -DGOOGLE_CLOUD_CPP_GMOCK_PROVIDER=vcpkg
+)
+
+vcpkg_install_cmake(ADD_BIN_TO_PATH)
+
+file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/include/bigtable/client/testing)
+file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/debug/include)
+
+vcpkg_fixup_cmake_targets(CONFIG_PATH share/cmake TARGET_PATH share/bigtable_client)
+
+file(INSTALL ${SOURCE_PATH}/LICENSE DESTINATION ${CURRENT_PACKAGES_DIR}/share/google-cloud-cpp RENAME copyright)
+
+vcpkg_copy_pdbs()