Move PS content out of OneDrive

[jshigetomi]

This pull request proposes a new RFC (RFC0066) to change the default location of PowerShell user content on Windows machines from OneDrive to the AppData directory. The goal is to align PowerShell with other developer tools and improve usability by preventing unnecessary syncing issues.

Key changes include:

• Introduction of RFC0066 to move PowerShell user content to the AppData directory on Windows.
• Specification of the new directory structure in AppData and the creation of a configuration file to manage the user scoped PSModulePath.
• Allowing users to customize the location of PowerShell user content, with certain directories being non-configurable.
• Providing an example script to relocate existing PowerShell content to the new location.