add trisycl formula

Formula/trisycl.rb

+# Documentation: https://docs.brew.sh/Formula-Cookbook
+#                https://rubydoc.brew.sh/Formula
+# PLEASE REMOVE ALL GENERATED COMMENTS BEFORE SUBMITTING YOUR PULL REQUEST!
+class Trisycl < Formula
+  desc "Generic system-wide modern C++ for heterogeneous platforms with SYCL from Khronos Group"
+  homepage "https://github.com/triSYCL/triSYCL"
+  license "NCSA"
+  head "https://github.com/triSYCL/triSYCL.git"
+
+  depends_on "cmake" => :build
+  depends_on "boost"
+  depends_on "llvm"
+  depends_on "range-v3"
+
+  def install
+    # ENV.deparallelize  # if your formula fails when building in parallel
+    system "cmake", ".", *std_cmake_args
+    system "make", "install" # if this fails, try separate make/make install steps
+  end
+
+  test do
+    # `test do` will create, run in and delete a temporary directory.
+    #
+    # This test will fail and we won't accept that! For Homebrew/homebrew-core
+    # this will need to be a test that verifies the functionality of the
+    # software. Run the test with `brew test triSYCL`. Options passed
+    # to `brew install` such as `--HEAD` also need to be provided to `brew test`.
+    #
+    # The installed folder is not in the path, so use the entire path to any
+    # executables being tested: `system "#{bin}/program", "do", "something"`.
+    system "false"
+  end
+end