Assets revamp

[erlend-sh]

With the help of dani567 we're gonna attempt to make a high definition version of CDogs' pixel-art assets by upscaling them from a 16px baseline to 32px. This is part of an effort to bring CDogs to a publishable, Steam-ready state.

Classic:

Revamped:

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With the mock-up complete, the next milestone is to complete an asset pack of all the essentials needed to make a playable demo using the new assets.