Refactor XR Privacy Agreement UI for XRPF 2.0

[parisacognitive3d]

This PR includes updates and improvements for XRPF 2.0:

• Refactored the entire XR Privacy Agreement UI
• Made the popup customizable via the PrivacyAgreementCanvas component
• Updated the minimum Unity version to 2021.3 to align with Unity SDK 2.0
• Added Audio permission support to the agreement UI

[Copilot]

Pull request overview

This PR refactors the XR Privacy Framework for version 2.0, introducing a redesigned, theme-customizable privacy agreement UI and adding support for audio permissions. The minimum Unity version requirement has been updated from 2019.4 to 2021.3 to align with Unity SDK 2.0 compatibility.

Key Changes:

• Added audio data permission support across the entire framework
• Completely refactored PrivacyAgreementCanvas component with customizable theming system
• Enhanced Foldout component with theme color application methods
• Introduced new UI shaders and materials for gradient and radial glow effects

Reviewed changes

Copilot reviewed 33 out of 52 changed files in this pull request and generated 10 comments.

Show a summary per file

File	Description
package.json	Bumped version to 2.0.0 and updated minimum Unity requirement to 2021.3
Runtime/XRPrivacyFramework.cs	Added IsAudioDataAllowed property to interfaces and agreement classes; updated SetNewAgreement signature
Samples~/CodeSamples/SaveToPreferences.cs	Added audio field to preferences class and updated serialization/deserialization logic
Samples~/AgreementPopup/Scripts/PrivacyAgreementCanvas.cs	Complete rewrite with ColorTheme system, theme application methods, and editor inspector customization
Samples~/AgreementPopup/Scripts/Foldout.cs	Added SetThemeColors, UpdateVisualState, and OnToggleValueChanged methods for theme support
Samples~/AgreementPopup/Content/*	Added new UI shaders (UIGradient, UIRadialGlow), materials, sprites, and icon assets
Samples~/AgreementPopup/Content/DataSourcePanel.prefab	Updated prefab with new UI structure, icons, improved layout, and theme-aware components

Comments suppressed due to low confidence (1)

Samples~/CodeSamples/SaveToPreferences.cs:25

• The format string ignores this supplied value.

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