chore(docs): clean up and add new content (#15003)

* wip: Install

* wip: sharing

* wip: features

* wip: features

* wip: tags and folder view

* update links

* fix: broken reference to page sections

* pr feedback

* Update docs/docs/overview/comparison.md

Co-authored-by: Daniel Dietzler <36593685+danieldietzler@users.noreply.github.com>

* webp

* webp is glory

* webp is glory

---------

Co-authored-by: Daniel Dietzler <36593685+danieldietzler@users.noreply.github.com>

docs/docs/developer/architecture.mdx

@@ -2,7 +2,7 @@
 sidebar_position: 1
 ---
 
-import AppArchitecture from './img/app-architecture.png';
+import AppArchitecture from './img/app-architecture.webp';
 import MobileArchitecture from './img/immich_mobile_architecture.svg';
 
 # Architecture