branding: added logo & badge, new icon.png

[b7g]

Description

• [x] New feature (non breaking change that adds functionality)

This PR adds a logo badge, a full logo and a new icon.png for the Godot project. The badge shows a stylised “S” (the first letter of the project name) consisting of an up and a down pointing shape (symbolizing the votes).

Related to #38 (pr)

Environment

• OS: Ubuntu 22.04 LTS
• Software versions: Godot 3.4

Testing

The project manager shows the new icon.

Checklist

• [x] My changes generate no new warnings or errors
• [x] The project compiles and runs correctly

[Numenter]

Logo looks OK to me. There are some unrelated changes committed, remove those.

[BjoernAkAManf]

Also update readme with badge.

[b7g]

I updated the SVG of the logo, as the text was not converted to path somehow.

Have I restored the files in the correct way?

[b7g]

Well, I think have haven't understood git yet. Not blaming myself there, tho.

Is this acceptable?

[Numenter]

No worries. Yes, looks fine to me.