Fixes: #19492: Add Save Button to Script Output Window (#19721)

* Add condition to ScriptResultView.get function to generate a download
file of job output if job is completed

* Update template script_result.html adding a download button to trigger
output download in ScriptResultView.get

* Simplify conditional logic; tweak timestamp format

---------

Co-authored-by: Jeremy Stretch <jstretch@netboxlabs.com>

netbox/templates/extras/htmx/script_result.html

@@ -53,7 +53,16 @@
     {# Script output. Legacy reports will not have this. #}
     {% if 'output' in job.data %}
       <div class="card mb-3">
-      <h2 class="card-header">{% trans "Output" %}</h2>
+        <h2 class="card-header d-flex justify-content-between">
+          {% trans "Output" %}
+          {% if job.completed %}
+            <div>
+              <a href="?export=output" class="btn btn-primary lh-1" role="button">
+                <i class="mdi mdi-download" aria-hidden="true"></i> {% trans "Download" %}
+              </a>
+            </div>
+          {% endif %}
+        </h2>
         {% if job.data.output %}
           <pre class="card-body font-monospace">{{ job.data.output }}</pre>
         {% else %}