Remove microwin (#3999)

* Delete microwin functions

* Update main.ps1

* Remove oscdimg.exe which is used by microwin

* Delete config/autounattend.xml

* Update .gitignore

* Update bug_report.yaml

* Update themes.json

* Update Invoke-WinUtilFontScaling.ps1

* Update Invoke-AutoConfigDialog.ps1

* Update Invoke-WPFButton.ps1

* Update inputXML.xaml

* Delete docs/assets/images/microwin directory

* Delete docs/assets/images/MicroWinScreen.png

* Delete docs/assets/images/Microwin-Dark.png

* Delete docs/assets/images/Microwin-Light.png

* Update faq.md

* Update KnownIssues.md

* Update getting-started.md

* Update _index.md

* Delete docs/content/userguide/microwin directory

* Update architecture.md

---------

Co-authored-by: Chris Titus <dfm.titus@gmail.com>

docs/content/userguide/getting-started.md

@@ -91,7 +91,6 @@ Winutil opens with a clean, tabbed interface:
 - **Tweaks**: Apply system optimizations and customizations
 - **Config**: Access system tools and utilities
 - **Updates**: Manage Windows updates
-- **MicroWin**: Create custom, lightweight Windows ISOs
 
 ## Your First Actions
 
@@ -261,7 +260,6 @@ Now that you're set up, explore these guides:
 
 - [Application Installation Guide](../store/) - Learn about installing software
 - [Tweaks Guide](../tweaks/) - Understand system optimizations
-- [MicroWin Guide](../microwin/) - Create custom Windows ISOs
 - [FAQ](../../faq/) - Common questions and answers
 
 ## Getting Help