Add GWG and OGO logo assets (#124)

* Add OGO logo assets

Signed-off-by: iboonox <[email protected]>

* Add GWG logo assets + change assets folder structure

Signed-off-by: iboonox <[email protected]>

* Fix source folder path

Signed-off-by: iboonox <[email protected]>
Signed-off-by: Scott Rigby <[email protected]>

Author: iboonox

artwork/README.md

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+# OpenGitOps Branding
+
+Here you'll find logo assets and a brand styleguide for the OpenGitOps project.
+
+Logo creation discussion and consensus : [Github discussion](https://github.com/gitops-working-group/gitops-working-group/discussions/63)
+
+## Logo
+
+<div align="center">
+<img src="icon/color/opengitops-icon-color.svg" width=400px  /><hr/>
+<img src="stacked/color/opengitops-stacked-color.svg" width=360px  /><hr/>
+<img src="horizontal/color/opengitops-horizontal-color.svg" width=360px  />
+</div>
+
+
+## Source Files
+
+The branding was created in [Adobe Illustrator](https://www.adobe.com/fr/products/illustrator.html), [source files](../src/) are created in the vector `.ai` format.
+
+## Styleguide
+
+The project typography uses the [Lato](https://fonts.google.com/specimen/Lato) typeface created by Łukasz Dziedzic, which is made available under the Open Font License
+
+![opengitops-styleguide-typography](styleguide.svg)
+
+
+The colors should be used sparingly for clean layouts. Here are some example uses // TODO
+
+---
+
+Any questions ? Looking for additional assets? Contact [iboonox](https://github.com/iboonox/).