feat(server,web): system config for admin (#959)

* feat: add admin config module for user configured config, uses it for ffmpeg

* feat: add api endpoint to retrieve admin config settings and values

* feat: add settings panel to admin page on web (wip)

* feat: add api endpoint to update the admin config

* chore: re-generate openapi spec after rebase

* refactor: move from admin config to system config naming

* chore: move away from UseGuards to new @Authenticated decorator

* style: dark mode styling for lists and fix conflicting colors

* wip: 2 column design, no edit button

* refactor: system config

* chore: generate open api

* chore: rm broken test

* chore: cleanup types

* refactor: config module names

Co-authored-by: Zack Pollard <zackpollard@ymail.com>
Co-authored-by: Zack Pollard <zack.pollard@moonpig.com>

server/libs/immich-config/tsconfig.lib.json

@@ -0,0 +1,9 @@
+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "declaration": true,
+    "outDir": "../../dist/libs/immich-config"
+  },
+  "include": ["src/**/*"],
+  "exclude": ["node_modules", "dist", "test", "**/*spec.ts"]
+}