Feature: Document CSP directives

[ojensen5115]

Description

Many web applications employ a Content Security Policy to restrict which domains or resources can be loaded. It would be nice to document what domains need to be allow-listed in order to allow Authing to work.

For example, necessary CSP directives will need to include at least the following:

• connect-src: [youraccount].authing.cn core.authing.cn files.authing.co
• img-src: authing-files.oss-cn-zhangjiakou.aliyuncs.com
• font-src: at.alicdn.com

I'm not sure if the above list is complete.

Proposed solution

Documenting the full list of origins that need to be added to a web application's Content Security Policy to allow Authing to function.