feat: add server settings for default board, default color scheme and default locale (#1373)

* feat: add server settings for default board, default color scheme and default locale

* chore: address pull request feedback

* test: adjust unit tests to match requirements

* fix: deepsource issue

* chore: add deepsource as dependency to translation library

* refactor: restructure language-combobox, adjust default locale for next-intl

* chore: change cookie keys prefix from homarr- to homarr.

packages/definitions/src/cookie.ts

@@ -0,0 +1,2 @@
+export const colorSchemeCookieKey = "homarr.color-scheme";
+export const localeCookieKey = "homarr.locale";

packages/definitions/src/index.ts

@@ -8,3 +8,4 @@ export * from "./auth";
 export * from "./user";
 export * from "./group";
 export * from "./docs";
+export * from "./cookie";