feat(web, server): Ability to use config file instead of admin UI (#3836)

* implement method to read config file

* getConfig returns config file if present

* return isConfigFile for http requests

* disable elements if config file is used, show message if config file is set, copy existing config to clipboard

* fix allowing partial configuration files

* add new env variable to docs

* fix tests

* minor refactoring, address review

* adapt config type in frontend

* remove unnecessary imports

* move config file reading to system-config repo

* add documentation

* fix code formatting in system settings page

* add validator for config file

* fix formatting in docs

* update generated files

* throw error when trying to update config. e.g. via cli or api

* switch to feature flags for isConfigFile

* refactoring

* refactor: config file

* chore: open api

* feat: always show copy/export buttons

* fix: default flags

* refactor: copy to clipboard

---------

Co-authored-by: Jason Rasmussen <jrasm91@gmail.com>

web/src/routes/(user)/sharing/sharedlinks/+page.svelte

@@ -1,7 +1,7 @@
 <script lang="ts">
   import ControlAppBar from '$lib/components/shared-components/control-app-bar.svelte';
   import ArrowLeft from 'svelte-material-icons/ArrowLeft.svelte';
-  import { api, SharedLinkResponseDto } from '@api';
+  import { api, copyToClipboard, SharedLinkResponseDto } from '@api';
   import { goto } from '$app/navigation';
   import SharedLinkCard from '$lib/components/sharedlinks-page/shared-link-card.svelte';
   import {
@@ -49,12 +49,7 @@
   };
 
   const handleCopyLink = async (key: string) => {
-    const link = `${window.location.origin}/share/${key}`;
-    await navigator.clipboard.writeText(link);
-    notificationController.show({
-      message: 'Link copied to clipboard',
-      type: NotificationType.Info,
-    });
+    await copyToClipboard(`${window.location.origin}/share/${key}`);
   };
 </script>