Add "Bgee API" links in the menu and footer as Resources

Author: smoretti

src/components/Layout/Footer/Footer.tsx

@@ -137,6 +137,11 @@ const Footer = () => {
                   SPARQL editor
                 </Link>
               </li>
+              <li>
+                <a href="/doc-api/" target="_blank">
+                  Bgee API
+                </a>
+              </li>
             </ul>
           </div>
           <div className="nav-footer-col-spacer" />

src/components/Modal/MenuModal.tsx

@@ -123,6 +123,12 @@ const SIDE_MENU = [
         path: `/sparql-editor${URL_ROOT}/`,
         type: 'internal',
       },
+      {
+        key: 'page.resources.api.test',
+        title: 'Bgee API',
+        path: '/doc-api/',
+        type: 'external',
+      },
     ],
   },
   {