win: categorize disabling Defender Antivirus

This commit creates a parent category for disabling Defender antivirus.
Previously, the scripts to disable antivirus and its features were
scattered around and not grouped.
Grouping them informs users what defender component is being disabled.

- Create a separate category for disabling Defender antivirus
- Create a seprarate cateegory for disabling Defender user interface.
- Create a separate category for disabling Exploit Guard.
- Remove `Disable OS components for Defender`, instead of using this
  technical categorization, move them to their related features.
- In category names, change word `Microsoft Defender` to `Defender` for
  simplicity and alignment with new branding.