[grpc] Add feature absl-sync (#10307)

* [grpc] Update to 1.28.0 and add feature absl-sync

* Update to 1.28.1 and fix linkage issues

ports/grpc/00010-add-feature-absl-sync.patch

@@ -0,0 +1,25 @@
+diff --git a/cmake/abseil-cpp.cmake b/cmake/abseil-cpp.cmake
+index 078d495..b6f50bd 100644
+--- a/cmake/abseil-cpp.cmake
++++ b/cmake/abseil-cpp.cmake
+@@ -37,4 +37,7 @@ elseif(gRPC_ABSL_PROVIDER STREQUAL "package")
+   # Use "CONFIG" as there is no built-in cmake module for absl.
+   find_package(absl REQUIRED CONFIG)
+   set(_gRPC_FIND_ABSL "if(NOT absl_FOUND)\n  find_package(absl CONFIG)\nendif()")
++  if (gRPC_ABSL_SYNC_ENABLE)
++    add_definitions(-DGPR_ABSEIL_SYNC=1)
++  endif()
+ endif()
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index df1703c..7667662 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -1464,6 +1464,8 @@ target_link_libraries(gpr
+   absl::str_format
+   absl::strings
+   absl::optional
++  absl::time
++  absl::synchronization
+ )
+ if(_gRPC_PLATFORM_ANDROID)
+   target_link_libraries(gpr

ports/grpc/CONTROL

@@ -1,5 +1,8 @@
 Source: grpc
-Version: 1.28.1
+Version: 1.28.1-1
 Build-Depends: zlib, openssl, protobuf, c-ares (!uwp), upb, abseil
 Homepage: https://github.com/grpc/grpc
 Description: An RPC library and framework
+
+Feature: absl-sync
+Description: Use abseil synchronization module

ports/grpc/portfile.cmake

@@ -5,8 +5,8 @@ endif()
 vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO grpc/grpc
-    REF v1.28.1
-    SHA512 5cc4993470e2df21447d032ddeb65ab4175bb8acad5a06fdd22564068b80a5be255ef0e44d36732642d39dc3eaec02a93d2aaf6e369ad5dc43ff99b5023f357b
+    REF cb81fe0dfaa424eb50de26fb7c904a27a78c3f76 #v1.28.1
+    SHA512 ff33c1afe413475846f53fd6b6921323019a6da2218fe4827e43e390e04ea073d8e56b0a9b32015233106a6d90a83eff0fa631df37a96036a9c810a4dc32ea4f
     HEAD_REF master
     PATCHES
         00001-fix-uwp.patch
@@ -15,6 +15,7 @@ vcpkg_from_github(
         00004-link-gdi32-on-windows.patch
         00005-fix-uwp-error.patch
         00009-use-system-upb.patch
+        00010-add-feature-absl-sync.patch
         snprintf.patch
 )
 
@@ -33,10 +34,14 @@ else()
     set(cares_CARES_PROVIDER "package")
 endif()
 
+vcpkg_check_features(OUT_FEATURE_OPTIONS FEATURE_OPTIONS
+    absl-sync gRPC_ABSL_SYNC_ENABLE
+)
+
 vcpkg_configure_cmake(
     SOURCE_PATH ${SOURCE_PATH}
     PREFER_NINJA
-    OPTIONS
+    OPTIONS ${FEATURE_OPTIONS}
         -DgRPC_INSTALL=ON
         -DgRPC_BUILD_TESTS=OFF
         -DgRPC_STATIC_LINKING=${gRPC_STATIC_LINKING}
@@ -53,13 +58,13 @@ vcpkg_configure_cmake(
         -DgRPC_INSTALL_BINDIR:STRING=tools/grpc
         -DgRPC_INSTALL_LIBDIR:STRING=lib
         -DgRPC_INSTALL_INCLUDEDIR:STRING=include
-        -DgRPC_INSTALL_CMAKEDIR:STRING=share/grpc
+        -DgRPC_INSTALL_CMAKEDIR:STRING=share/gRPC
         -DgRPC_BUILD_CODEGEN=${gRPC_BUILD_CODEGEN}
 )
 
 vcpkg_install_cmake(ADD_BIN_TO_PATH)
 
-vcpkg_fixup_cmake_targets()
+vcpkg_fixup_cmake_targets(CONFIG_PATH share/gRPC TARGET_PATH share/gRPC)
 
 file(INSTALL ${SOURCE_PATH}/LICENSE DESTINATION ${CURRENT_PACKAGES_DIR}/share/grpc RENAME copyright)