[RFC][TwigBridge] Add option to prevent html escaping for translations

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes (todo: new tests)
| Fixed tickets | n/a
| License       | MIT
| Doc PR        | todo

I find for almost every project I extend this class to enable this.  Maybe there is an alternate solution I am not seeing.  I almost always have bits of html in my translations for button icons and such.  Is this a bad idea?  If so, then of course this PR is probably invalid.

If we want to add this feature, where should it be configured?

Thoughts?