Move images from docs to docs/general to make it available for mkdocs#79

adamamer20 merged 3 commits intomainmesa/mesa-frames:mainfrom

78-performance-plots-are-shown-with-broken-image-icon-not-found-in-the-main-documentation-websitemesa/mesa-frames:78-performance-plots-are-shown-with-broken-image-icon-not-found-in-the-main-documentation-websiteCopy head branch name to clipboard