[Enhancement]: Sign the MelonLoader assembly (give it a strong name)

[HAHOOS]

Describe the new feature or enhancement

I've been working on a plugin and I have been trying to make it as backwards compatible as possible. An issue I am encountering is that I cannot reference two versions, because of them not having a strong name, which makes it hard to make plugins/mods compatible with older versions, because of changed methods, non-existent variables etc. I think by signing and giving ML a strong name in the future might help other people make their "Melons" also backwards compatible. Obviously I'm not saying that all older versions should be given a strong name and reuploaded to Github, but in future releases I think it could help some people (not a lot but still).