[microsoft-signalr] Add new port

ports/microsoft-signalr/CONTROL

@@ -0,0 +1,13 @@
+Source: microsoft-signalr
+Version: 0.1.0-alpha1
+Description: C++ Client for ASP.NET Core SignalR.
+Default-Features: default-features
+Homepage: https://github.com/aspnet/SignalR-Client-Cpp
+
+Feature: default-features
+Build-Depends: microsoft-signalr[cpprestsdk] (!uwp)
+Description: Features installed by default
+
+Feature: cpprestsdk
+Description: Add default Http and WebSocket implementations using CppRestSDK
+Build-Depends: cpprestsdk[default-features,websockets]

ports/microsoft-signalr/portfile.cmake

@@ -0,0 +1,35 @@
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO aspnet/SignalR-Client-Cpp
+    REF v0.1.0-alpha1
+    SHA512 d37eea194b0352a08dd89ac7622bdd6224312ad48a31d8ab36627a8aaff5e795e3513ad010eed516703f6da842a95119c1a4a290b145a43e91ff80a37fff8676
+    HEAD_REF master
+)
+
+vcpkg_check_features(
+    OUT_FEATURE_OPTIONS FEATURE_OPTIONS
+    FEATURES
+        cpprestsdk USE_CPPRESTSDK
+)
+
+if("cpprestsdk" IN_LIST FEATURES AND VCPKG_TARGET_IS_UWP)
+    message(FATAL_ERROR "microsoft-signalr[cpprestsdk] is not supported on UWP, use microsoft-signalr[core] instead")
+endif()
+
+vcpkg_configure_cmake(
+    SOURCE_PATH ${SOURCE_PATH}
+    PREFER_NINJA
+    OPTIONS
+        -DBUILD_TESTING=OFF
+        ${FEATURE_OPTIONS}
+        -DWALL=OFF
+)
+
+vcpkg_install_cmake()
+
+file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/debug/include)
+
+file(INSTALL ${SOURCE_PATH}/LICENSE.txt DESTINATION ${CURRENT_PACKAGES_DIR}/share/${PORT} RENAME copyright)
+file(COPY ${SOURCE_PATH}/third-party-notices.txt DESTINATION ${CURRENT_PACKAGES_DIR}/share/microsoft-signalr)
+
+vcpkg_copy_pdbs()