Add zstd to build scripts

Add zstd to build scripts

Author: amielcza

documentation/build_ubuntu.md

@@ -10,10 +10,10 @@ SPDX-License-Identifier: MIT
 
 ### 1. Prepare workspace
 
-Building IGC needs flex, bison, libz and cmake version at least 3.13.4. You can install required packages on Ubuntu using this command:
+Building IGC needs flex, bison, libz, libzstd-dev and cmake version at least 3.13.4. You can install required packages on Ubuntu using this command:
 
 ```shell
-sudo apt-get install flex bison libz-dev cmake libc6 libstdc++6 python3-pip
+sudo apt-get install flex bison libz-dev cmake libc6 libstdc++6 libzstd-dev python3-pip
 sudo python3 -m pip install mako
 ```
 

scripts/buildIGC.sh

@@ -49,7 +49,7 @@ else
 fi
 
 apt-get update
-apt-get install -y flex bison libz-dev cmake curl wget build-essential git software-properties-common unzip file lsb-release python3-mako libc6 libstdc++6
+apt-get install -y flex bison libz-dev cmake curl wget build-essential git software-properties-common unzip file lsb-release python3-mako libc6 libstdc++6 libzstd-dev
 echo "[Build Status] flex bison libz-dev cmake curl wget build-essential git software-properties-common unzip file INSTALLED"
 
 if [ "$UBUNTU_VERSION" = "20.04" ]; then