Add SYCL implementation

Author: WolframRhodium

sycl_source/CMakeLists.txt

@@ -0,0 +1,27 @@
+if(WIN32)
+    cmake_minimum_required(VERSION 3.23)
+else()
+    cmake_minimum_required(VERSION 3.20.5)
+endif()
+
+project(BM3DSYCL LANGUAGES CXX)
+
+find_package(IntelSYCL REQUIRED CONFIG)
+
+add_library(bm3dsycl SHARED source.cpp kernel.cpp)
+
+target_include_directories(bm3dsycl PRIVATE ${VAPOURSYNTH_INCLUDE_DIRECTORY})
+
+set_target_properties(bm3dsycl PROPERTIES
+    CXX_EXTENSIONS OFF
+    POSITION_INDEPENDENT_CODE ON
+    CXX_STANDARD 20
+    CXX_STANDARD_REQUIRED ON)
+
+add_sycl_to_target(
+    TARGET bm3dsycl
+    SOURCES source.cpp kernel.cpp)
+
+install(TARGETS bm3dsycl
+        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+        RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})