feat(theme): add a link to the source in the footer

i18n/en.yaml

@@ -20,3 +20,6 @@ warning_icon: Warning icon
 translations: Translations
 also_available_in: "Also available in:"
 table_of_contents: "Contents:"
+source_code: |
+  The source of this site is available on 
+  <a href="https://code.bcarlin.net/bcarlin/bcarlin.net">my software forge</a>.

i18n/fr.yaml

@@ -20,3 +20,6 @@ warning_icon: Icône attention
 translations: Traductions
 also_available_in: "Également disponible en :"
 table_of_contents: "Contenu :"
+source_code: |
+  Les sources de ce site sont disponibles sur
+  <a rel="external" href="https://code.bcarlin.net/bcarlin/bcarlin.net">ma forge logicielle</a>.

layouts/_partials/footer.html

@@ -11,4 +11,6 @@
   {{partial "icon.html" (dict "icon" "creative-commons-nc-fill" "label" "Creative Commons Non Commercial Logo")}}
   <br>
   {{ T "generated_with_hugo" | safeHTML }}
+  <br>
+  {{ T "source_code" | safeHTML }}
 </p>