chore: Add welcome message to auth-methods

ui/core/app/templates/scopes/scope/auth-methods/index.hbs

@@ -5,6 +5,7 @@
 
   <page.body>
     {{#if @model}}
+
       <Rose::Table as |table|>
         <table.header as |header|>
           <header.row as |row|>
@@ -31,6 +32,17 @@
           {{/each}}
         </table.body>
       </Rose::Table>
+
+    {{else}}
+
+      <Rose::Layout::Centered>
+        <Rose::Message @title={{t 'titles.auth-methods-welcome'}} as |message|>
+          <message.description>
+            {{t 'descriptions.auth-methods-welcome'}}
+          </message.description>
+        </Rose::Message>
+      </Rose::Layout::Centered>
+
     {{/if}}
   </page.body>
 </Rose::Layout::Page>

ui/core/translations/en-us.yaml

@@ -46,6 +46,7 @@ titles:
   users-welcome: Welcome to Users
   roles-welcome: Welcome to Roles
   groups-welcome: Welcome to Groups
+  auth-methods-welcome: Welcome to Auth Methods
   grants: Permissions
   new-grant: New Grant
   principals: Principals
@@ -57,6 +58,7 @@ descriptions:
   users-welcome: Users are authorized to access Boundary.
   roles-welcome: Roles are collections of capabilities that can be granted to user and/or groups.
   groups-welcome: Groups are collections of users.
+  auth-methods-welcome: Auth methods are configurations to authenticate users.
 states:
   info: Info
   success: Success