home Drugst.One preprint info alert

src/app/pages/home/home.component.html

 <div class="container">
     <div class="px-4 py-4">
 
+        <div class="alert alert-info alert-dismissible fade show" role="alert">
+  <strong>Drugst.One is available as preprint!</strong> Add Drugst.One now to your application to join the initiative. <a class="btn btn-primary" href="/call">Join</a>
+  <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
+</div>
+
         <!-- <h1 class="display-5 fw-bold">Centered hero</h1> -->
         <div class="row mt-5">
             <div class="col-lg-7 col-md-12 text-lg-start text-sm-center">