add install opencv script

scripts/install_opencv.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+# ==============================================================================
+# Copyright (C) 2018-2019 Intel Corporation
+#
+# SPDX-License-Identifier: MIT
+# ==============================================================================
+
+CURDIR=$PWD
+cd /tmp/
+
+OPENCV_VER=4.1.0
+OPENCV_REPO=https://github.com/opencv/opencv/archive/${OPENCV_VER}.tar.gz
+
+sudo apt-get install -y -q --no-install-recommends libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev python-dev python-numpy
+
+wget ${OPENCV_REPO} && \
+    tar -zxvf ${OPENCV_VER}.tar.gz && \
+    cd opencv-${OPENCV_VER} && \
+    mkdir build && \
+    cd build && \
+    cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr/local -D BUILD_EXAMPLES=OFF -D BUILD_PERF_TESTS=OFF -D BUILD_DOCS=OFF -D BUILD_TESTS=OFF .. && \
+    make -j $(nproc) && \
+    sudo make install
+
+cd $CURDIR