Ubuntu setup scripts

First of all, install Ubuntu20.04 on the Windows Subsystem for Linux2 (WSL2)

https://docs.microsoft.com/en-us/windows/wsl/install-win10

Tips.
When you upgrade Windows Insider Preview Build and get the following error. you can download and install the Linux kernel update package from Microsoft.

https://docs.microsoft.com/en-us/windows/wsl/wsl2-kernel

Execute the setup scripts

1. execute setup/setup.sh Each Libraries and Programming Languages would be installed.

2. Follow the setup guidances in the after_setting_up directory docs