Add config_display option to support regular and large renders (#310)

source/plugins/core/README.md

@@ -140,6 +140,21 @@ It may increase filesize since it replace unicode characters by SVG images.
     config_twemoji: yes
 ```
 
+### ↔️ Controlling display size
+
+Some templates like `classic` and `repositories` support different output display size:
+- `regular` (default) will render a medium-sized image, which is suitable for both desktop and mobile displays and is preferable when using data-intensive metrics (since text may be scaled down on small devices)
+- `large` will render a large-sized image, which may be more suitable for some plugins (like displaying topics icons,  repository contributors, etc.)
+
+#### ℹ️ Examples workflows
+
+```yaml
+- uses: lowlighter/metrics@latest
+  with:
+    # ... other options
+    config_display: large
+```
+
 ### 🎞️ SVG CSS Animations
 
 As rendered metrics use HTML and CSS, some templates have animations.