feat: shells/onion Python ecosystem diagram + Scikit-HEP shells (#282)

* feat: shells/onion Python ecosystem diagram + Scikit-HEP shells

* style: ignore spelling in svgs

* Renamed directory and image files.

Co-authored-by: Henry Schreiner <[email protected]>
Co-authored-by: Eduardo Rodrigues <[email protected]>

Author: 3 people

.pre-commit-config.yaml

@@ -31,7 +31,7 @@ repos:
     rev: v2.2.1
     hooks:
       - id: codespell
-        exclude: ^Gemfile.lock$
+        exclude: (^Gemfile\.lock|\.svg)$
         args: ["-L", "hist,sur,nd,theses,ser"]
 
   - repo: https://github.com/pre-commit/mirrors-prettier