Add new categories, move recipes and update the README

README.md

recipes/core/pkgar/recipe.toml

recipes/core/redoxerd/recipe.toml

recipes/core/strace/recipe.toml

recipes/dev/git/git.patch

recipes/dev/git/recipe.sh

recipes/dev/gitoxide/recipe.toml

recipes/graphics/procedural-wallpapers-rs/recipe.toml

recipes/libs/atk/recipe.sh

recipes/libs/atk/redox.patch

recipes/libs/cairo/recipe.toml

recipes/libs/cairo/redox.patch

recipes/libs/nghttp2/recipe.toml

recipes/libs/pango/recipe.sh

recipes/libs/pango/redox.patch

recipes/libs/sdl-gfx/01_redox.patch

recipes/libs/sdl-gfx/recipe.sh

recipes/libs/sdl1-image/01_redox.patch

recipes/libs/sdl1-image/recipe.sh

recipes/libs/sdl1-mixer/recipe.toml