[enh] Add azlyrics.com

Upstream example query: https://search.azlyrics.com/search.php?q=The+verbal+acupunture&w=lyrics&p=1

searx/settings.yml

@@ -741,6 +741,23 @@ engines:
       require_api_key: false
       results: HTML
 
+  - name : azlyrics
+    shortcut : lyrics
+    engine : xpath
+    timeout : 4.0
+    disabled : True
+    categories : general
+    paging : True
+    search_url : https://search.azlyrics.com/search.php?q={query}&w=lyrics&p={pageno}
+    url_xpath : //td[@class="text-left visitedlyr"]/a/@href
+    title_xpath : //span/b/text()
+    content_xpath : //td[@class="text-left visitedlyr"]/a/small
+    about:
+      website: https://azlyrics.com
+      use_official_api: false
+      require_api_key: false
+      results: HTML
+
   - name : library of congress
     engine : loc
     shortcut : loc