Add SVG support to DomSanitizer

🚀 feature request

Relevant Package

This feature request is for @angular/core

Description

There should be a way to sanitize SVG code, right now even `<svg></svg>` is getting stripped to nothing by DomSanitizer.sanitize in HTML context. Perhaps there could be separate SVG SecurityContext added, but there should be a way to use SVG via source string in Angular.

Describe the solution you’d like

DomSanitizer should be able to sanitize SVG.

Describe alternatives you’ve considered

Creating your own sanitizer, probably using DOMPurify

[waterplea]

Well, I ended up creating my own sanitizer that delegates work to DOMPurify, works pretty good: https://github.com/TinkoffCreditSystems/ng-dompurify Might be what you need, but your suggestion is also interesting.

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