Add WebView feature to Wizard and Templates

[Copilot]

Summary

Adds WebView as a selectable feature option in the Uno Platform template wizard and templates, following the same pattern as the existing Media Element feature.

Changes

This PR introduces the WebView feature that allows developers to easily configure their applications to bundle the native assets required for WebView support during project creation.

Files Modified

1. Icon Asset: Created Features.WebView.svg - A globe/web browser icon in the signature Uno blue color (#0095F2) that visually represents web browsing functionality

2. Template Configuration (template.json):

   • Added webView symbol as a boolean parameter
   • Display name: "WebView"
   • Description: "Configures application to bundle native assets required for the WebView"
   • Default value: false

3. Wizard Configuration (TemplateWizard.json):

   • Added webView icon reference in the MetaData section
   • Included webView in the Features section's SymbolIds array (alongside mediaElement, toolkit, etc.)
   • Added webView to the ExportableSymbols list
   • Set default value to "false" in both "blank" and "recommended" presets

4. Project Template (MyExtensionsApp.1.csproj):

   • Added conditional compilation directive: <!--#if (webView)-->WebView;<!--#endif-->
   • Positioned after mediaElement for consistency with other feature flags

Visual Preview

The WebView feature will appear in step 7 (Features) of the template wizard:

Testing

The changes follow the exact same pattern as the existing mediaElement feature, ensuring consistency across the template system. The feature will be available for selection in the wizard's Features step alongside other optional features like Toolkit, Media Element, and VS Code debugging.

Closes #1802

Warning

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I tried to connect to the following addresses, but was blocked by firewall rules:

• aka.ms
  • Triggering command: dotnet pack -c Release (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

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Original prompt

---

This section details on the original issue you should resolve

<issue_title>Add WebView feature in Wizard/Templates</issue_title>
<issue_description>Add WebView feature as an option in Wizard and templates</issue_description>

<agent_instructions>Add WebView as a feature, similar to how Media Element is presented. Create an initial icon that represents a web browser</agent_instructions>

Comments on the Issue (you are @copilot in this section)

@MartinZikmund @agneszitte @NVLudwig I think the `WebView` feature would be added here:

We will need an icon for it, otherwise it will be mainly a question of a few configuration changes</comment_new>
<comment_new>@MartinZikmund
Made a draft PR, linked.

@kazo0 assigned to you as I will be away for 2 weeks, feel free to reassign to someone else to finalize and validate 🙏</comment_new>
<comment_new>@Takoooooo
Ping me once we'll have a needed asset to finish the work. I can finalize and validate :)</comment_new>
<comment_new>@kazo0
Assigning this to @NVLudwig for now and placing back to To Do as we will first need designs for a logo and the description text and the final approval for those designs

fyi @Jen-Uno </comment_new>

Fixes #1586

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[nickrandolph]

@NVLudwig can you comment/adjust/improve on the icon created by copilot in this PR (see https://github.com/unoplatform/uno.templates/blob/copilot/add-webview-feature/src/Uno.Templates/content/unoapp/.template.config/Assets/Features.WebView.svg)

[NVLudwig]

Whats is the target supposed to mean, is it an AI artifact or should it be kept?