Benchmarks: Add Feature - Add script to build all cmake benchmark projects. (#72)

* add script to build all native benchmarks with cmake.

superbench/benchmarks/build.sh

+#!/bin/bash
+
+# Copyright (c) Microsoft Corporation - All rights reserved
+# Licensed under the MIT License
+
+
+SB_MICRO_PATH="${SB_MICRO_PATH:-/usr/local/bin}"
+SB_MICRO_LIB="${SB_MICRO_LIB:-/usr/local/lib}"
+
+for dir in micro_benchmarks/*/ ; do
+    if [ -f $dir/CMakeLists.txt ]; then
+        SOURCE_DIR=$dir
+        BUILD_ROOT=$dir/build
+        mkdir -p $BUILD_ROOT
+        cmake -DCMAKE_INSTALL_PREFIX=$SB_MICRO_PATH -DCMAKE_BUILD_TYPE=Release -S $SOURCE_DIR -B $BUILD_ROOT
+        cmake --build $BUILD_ROOT --target install
+    fi
+done