feat: localization (#196)

* Started adding locale translations :)

* Added some more translations

* Working on translating even more pages

* More translations

* Added test default locale retrieval

* replace `intl.formatMessage` with custom `t` hook

* add more translations

* improve title syntax

* add more translations

* translate admin config page

* translated error messages

* add language selecter

* minor fixes

* improve language handling

* add upcoming languages

* add `crowdin.yml`

* run formatter

---------

Co-authored-by: Steve Tautonico <stautonico@gmail.com>

frontend/src/components/share/DownloadAllButton.tsx

@@ -1,11 +1,15 @@
 import { Button } from "@mantine/core";
 import { useEffect, useState } from "react";
+import { FormattedMessage } from "react-intl";
+import useTranslate from "../../hooks/useTranslate.hook";
 import shareService from "../../services/share.service";
 import toast from "../../utils/toast.util";
 
 const DownloadAllButton = ({ shareId }: { shareId: string }) => {
   const [isZipReady, setIsZipReady] = useState(false);
   const [isLoading, setIsLoading] = useState(false);
+  const t = useTranslate();
+
   const downloadAll = async () => {
     setIsLoading(true);
     await shareService
@@ -39,13 +43,13 @@ const DownloadAllButton = ({ shareId }: { shareId: string }) => {
       loading={isLoading}
       onClick={() => {
         if (!isZipReady) {
-          toast.error("The share is preparing. Try again in a few minutes.");
+          toast.error(t("share.notify.download-all-preparing"));
         } else {
           downloadAll();
         }
       }}
     >
-      Download all
+      <FormattedMessage id="share.download-all" />
     </Button>
   );
 };