[api-documenter] New api-documenter.json for customizing/eliminating generated strings

[octogonz]

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…ious output notices, as well as disabling the "breadcrumb" generation

Summary

This is currently a DRAFT pull request. I'm proposing some new api-documenter.json settings to address two feature requests:

• Remove the navigation "breadcrumb" links from the generated .md files: https://github.com/microsoft/rushstack/issues/5177

• Remove the Do not edit this file notice from the generated .md files: https://github.com/microsoft/rushstack/issues/5176

I went a step further and designed an option for configuring the text of various notices. To eliminate a notice entirely, you would set its text to be an empty string ("").

Details

There is currently some confusion where api-documenter markdown does not read api-documenter.json, whereas api-documenter generate does use this config file. We had some plans to clarify that, but I've forgotten the details. Need to investigate before proceeding.

How it was tested

Impacted documentation