feat(icons): add the sourcedock.dev icon

README.md

@@ -15,6 +15,7 @@ svg-assets/
 │   ├── gasm-devkit.svg
 │   ├── interpres.svg
 │   ├── scripts.svg
+│   ├── sourcedock.svg
 │   ├── tensor.svg
 │   ├── volumen.svg
 │   └── xstd.svg
@@ -141,6 +142,7 @@ yet.
 | `icons/tensor.svg` | tensor, the scientific computing library for Go |
 | `icons/volumen.svg` | volumen, the file-based Markdown blog engine |
 | `icons/scripts.svg` | scripts, a DevOps toolbox of standalone Perl scripts |
+| `icons/sourcedock.svg` | sourcedock.dev, the self-hosted Git forge where this whole set berths |
 | `icons/interpres.svg` | interpres, TOML 1.0 parser for Go |
 
 ## Licence