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/setup-wizard/src/app/pages/success/success.page.ts

@@ -84,7 +84,7 @@ export class SuccessPage {
           encodeURIComponent(this.cert),
       )
     let html = this.document.getElementById('downloadable')?.innerHTML || ''
-    this.downloadHtml.download('embassy-info.html', html).then(_ => {
+    this.downloadHtml.download('StartOS-info.html', html).then(_ => {
       this.disableLogin = false
     })
   }