[AB-222] adding uptime command related templates

abstracto-modules/core/src/main/resources/en_US/commands/uptime/uptime_response_embed_en_US.ftl

@@ -0,0 +1,15 @@
+{
+  <#include "abstracto_color">,
+  "fields": [
+      {
+        "name": "<@safe_include "uptime_response_embed_start_date_field_title"/>",
+        <#assign startDate>${formatDate(startDate, "yyyy-MM-dd HH:mm:ss z")}</#assign>
+        "value": "${startDate}"
+      },
+      {
+        "name": "<@safe_include "uptime_response_embed_uptime_field_title"/>",
+        <#assign uptime>${fmtDuration(uptime)}</#assign>
+        "value": "${uptime}"
+      }
+  ]
+}