Website: harmonize all Logos | use jsDelivr CDN links for icons from selfhst/icons repo (#4603)

* Update jsons

* push

* more

* Switch to CDN

* push new Icons into Branch

* Update dotnetaspwebapi.json

* add proxmox logo

* Update wger.json

* switch to webp

* Update apt-cacher-ng.json

* Update homarr.json

* finalize

* Update sqlserver2022.json

* fixes

* merge

---------

Co-authored-by: tremor021 <arezina.slavisa@gmail.com>
Co-authored-by: Michel Roegl-Brunner <73236783+michelroegl-brunner@users.noreply.github.com>

frontend/public/json/elementsynapse.json

@@ -11,7 +11,7 @@
   "interface_port": 8008,
   "documentation": "https://element-hq.github.io/synapse/latest/welcome_and_overview.html",
   "website": "https://element.io/",
-  "logo": "https://element.io/images/logo-mark-primary.svg",
+  "logo": "https://cdn.jsdelivr.net/gh/selfhst/icons/webp/element.webp",
   "config_path": "/etc/matrix-synapse/homeserver.yaml",
   "description": "Synapse is an open source Matrix homeserver implementation, written and maintained by Element. Matrix is the open standard for secure and interoperable real time communications. You can directly run and manage the source code in this repository, available under an AGPL license. There is no support provided from Element unless you have a subscription.",
   "install_methods": [