US01: Add a button to the horse list that redirects us to the create form

frontend/wendys-friends/src/app/component/list-horses/list-horses.component.html

@@ -44,6 +44,7 @@
 
       <button type="submit" class="btn btn-primary"><i class="fas fa-search"></i></button>
       <button type="button" onclick="document.getElementById('searchForm').reset();" class="btn btn-danger"><i class="fas fa-times"></i></button>
+      <a href="horse/add" class="btn btn-success"><i class="fas fa-plus"></i></a>
     </div>
   </form>
   <table class="table">