Adding BLISP into the core repository

Blisp is a software used for flashing RISC-V microcontrollers
it is used for example to flashing the pinecil.
I was not able to add a bottle for various reasons. But the build from source works.

Formula/b/blisp.rb

@@ -0,0 +1,26 @@
+class Blisp < Formula
+  desc "ISP tool & library for Bouffalo Labs RISC-V Microcontrollers and SoCs "
+  homepage "https://github.com/pine64/blisp"
+  license "MIT"
+  url "https://github.com/pine64/blisp.git",
+      tag:      "v0.0.4",
+      revision: "f601b6b965a922b4a9f400d1c8fd946b69708728"
+  head "https://github.com/pine64/blisp.git", branch: "master"
+
+  depends_on "cmake" => :build
+
+  def install
+    # Remove unrecognized options if they cause configure to fail
+    # https://rubydoc.brew.sh/Formula.html#std_configure_args-instance_method
+    mkdir "build" do
+        system "cmake", "..", "-DBLISP_BUILD_CLI=ON"
+        system "cmake", "--build", "."
+      end
+    bin.install "build/tools/blisp"
+  end
+
+  test do
+  # Verify that the binary can be executed and output is correct
+    assert_match "blisp", shell_output("#{bin}/blisp --version")
+  end
+end