Add Set overload

[Kemsekov]

I had plenty of situations where I needed to set a whole image in one set invoke so I added this method

[Helmare]

Instead of overriding Set, which is typically used with Color objects, create a new method called Write and include the typical stream parameters like buffer, offset, and count. This is more flexible than just a simple Set.

Also, please document methods and add tests for them, as per the CONTRIBUTE.md. Something similar would be the CopyTo tests.

[Kemsekov]

Okey. I'll do as you said.

[Kemsekov]

I'll do some fixes and create new commit.

[Helmare]

I made an issue that discusses the new features and a new branch for implementing these so I can approve pull requests quickly without it needing to be official, like in the CONTRIBUTE.md