chore: migrate mail themes to shared framework and locked upstream inputs

framework/layouts/ember/frame-close.html

@@ -0,0 +1,3 @@
+
+</td></tr>
+</table>

framework/layouts/ember/frame-footer.html

@@ -0,0 +1,3 @@
+
+</td></tr>
+<tr><td class="email-footer">

framework/layouts/ember/frame-open.html

@@ -0,0 +1,4 @@
+
+<table role="presentation" width="100%" align="center" cellpadding="0" cellspacing="0" border="0" class="email-wrap email-card">
+<tr><td class="email-header">__HEADER__</td></tr>
+<tr><td class="email-body card-body mail-type-__MAIL_TYPE__">