Fix authentication for private reigstry

Fixes

• Support authentication for private reigstry

Add status badge to README on init

Features

• Add status badge for GitHub Actions to README on init

Tweak init command

Fixes

• #49

Improvements

• #51
• #50
• #48

Tweak README.md that will generate on init

Fixes

• Reflect name and URL in README.md that will generate on init

Tweak README.md to generate

Changes

• Tweak installation section in README.md to generate

Support GitHub Actions to automatic publish package

Features

• Support GitHub Actions to automatic publish package
  • using https://github.com/marketplace/actions/publish-upm
• Support to separate registry URL for Packages/manifest.json and registry URL for .npmrc

Update README.md that generated by upm-init

• Added link to upm-cli repository
• Added how to edit Packages/manifest.json

Support spaces in registry list

• Fixes #39 Registry list key cannot contain spaces

Fix error

Fixes

• #33 An error occured when running command on directory what contains space

Tweak project

Features

• #27 Generate LICENSE.txt and CHANGELOG.md
• #29 Apply Product Name and Company Name to ProjectSettings/ProjectSettings.asset

Fixes

• #28 Skip modify Assets/package.json if not exists