Update basic settings

[LuckyPigeon]

Description

Our basic settings like pytest, tox.ini, LICENSE... etc, are overtime. Need some update

Why we need this

Before we have another new release, we need to update our basic settings, include buildings and testing (CI/CD), and make developers have a better experience.

Tasks

• [x] LICENSE
• [x] gitignore
• [x] setup.py
• [x] requirements.txt (unify)
• [x] pytest
• [x] tox.ini
• [x] codecov
• [x] Wheel
• [x] Windows build
• [x] Linux build
• [x] MacOS build
• [x] ci
• [x] CONTRIBUTING.rst
• [ ] All-Contributors bot
• [x] ISSUE TEMPLATE
• [x] PULL REQUEST TEMPLATE