Add the osscameroon branding `pdf` and `logos`

[elhmn]

@Theryx , I think we should add the osscameroon logo and pdf in this repository

[Theryx]

You mean adding in the readme?

The file is large and numerous. I was thinking we could add it on a page on the OSS website. How easy is it to add a pdf on the repo?

[elhmn]

I meant adding a folder to the repository that contains the brand pdf you shared with me.