Added Update to AnimatedSprite & AnimatedTilemap with TimeSpan support

[vocero]

Prerequisites

• [x] I have verified that there are no existing pull requests that would overlap with this pull request.
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Description

Added Update(TimeSpan) methods to the AnimatedSprite & AnimatedTilemap classes, this removed the requirement to create a fake GameTime every Update when calling the Update(double deltaTime) overload.

Related Issue Ticket Numbers

n/a

[vocero]

@AristurtleDev I'm so sorry to have had send you the exact same pull request a 3rd times, but I didn't realized that if I did another commit+push on my fork it automatically included it in my already existing PR (which makes sense now that I think about it) anways it's the same exact pull request as the other 2, my bad.

[AristurtleDev]

@vocero no worries, thanks again for the contribution. There were some other changes pushed to develop recently that I put out in a prerelease NuGet, haven't had any bad feedback on it, so I should be able to do a new full release with your change included now as well.