external rename (#2265)

* backend rename

* rename embassy and closes #2179

* update root ca name on disk

* update MOTD

* update readmes

* your server typo

* another tiny typo

* fix png name

* Update backend/src/net/wifi.rs

Co-authored-by: Lucy C <12953208+elvece@users.noreply.github.com>

* changes needed due to rebase

---------

Co-authored-by: Matt Hill <matthewonthemoon@gmail.com>
Co-authored-by: Matt Hill <MattDHill@users.noreply.github.com>
Co-authored-by: Lucy C <12953208+elvece@users.noreply.github.com>

frontend/projects/ui/src/app/pages/login/login.page.html

@@ -6,7 +6,7 @@
 
         <ion-card class="card">
           <ion-card-header>
-            <ion-card-title class="title">Embassy Login</ion-card-title>
+            <ion-card-title class="title">StartOS Login</ion-card-title>
           </ion-card-header>
 
           <ion-card-content class="ion-margin">