Initial PEDM refactoring

[thenextman]

This is a work-in-progress refactoring of the PEDM module, while we get to grips with the functionality and take the prototype to something releasable. Subsequent PRs will be more focused.

This pull request:

• Patches memory bugs in security primitives (in the sid, privilege and token modules) that were causing runtime crashes in debug builds and clear undefined behaviour otherwise
• Disables logging of PEDM elevations. The log target is determined based on finding the file for the current day, but misses the fact that we might not roll the log file daily. This will be replaced by a database-backed logging solution.
• Disables configuration of secure program data directories. The functionality is currently broken due to a loosely defined bug in the relevant security primitives.
• Remove the rules configuration from the core API and regenerates clients accordingly
• Introduces a revised PEDM desktop agent, running as a system tray application and using system notifications

A follow up PR will integrate packaging and build for the revised PEDM desktop agent.

[github-actions]

Let maintainers know that an action is required on their side

• Add the label release-required Please cut a new release (Devolutions Gateway, Devolutions Agent, Jetsocat, PowerShell module) when you request a maintainer to cut a new release (Devolutions Gateway, Devolutions Agent, Jetsocat, PowerShell module)

• Add the label release-blocker Follow-up is required before cutting a new release if a follow-up is required before cutting a new release

• Add the label publish-required Please publish libraries (`Devolutions.Gateway.Utils`, OpenAPI clients, etc) when you request a maintainer to publish libraries (Devolutions.Gateway.Utils, OpenAPI clients, etc.)

• Add the label publish-blocker Follow-up is required before publishing libraries if a follow-up is required before publishing libraries

[CBenoit]

Thank you!