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/apps-routes/app-show/app-show.page.html

@@ -63,8 +63,10 @@
                 <a
                   [routerLink]="['/system', 'lan']"
                   style="color: var(--ion-color-dark)"
-                  >download and trust your Embassy's certificate</a
-                >.
+                >
+                  download and trust your server's certificate
+                </a>
+                .
               </p>
               <ion-button (click)="launchHttps()">
                 Open https