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/admin/configuration/LogoConfigInput.tsx

@@ -2,6 +2,8 @@ import { Box, FileInput, Group, Stack, Text, Title } from "@mantine/core";
 import { useMediaQuery } from "@mantine/hooks";
 import { Dispatch, SetStateAction } from "react";
 import { TbUpload } from "react-icons/tb";
+import { FormattedMessage } from "react-intl";
+import useTranslate from "../../../hooks/useTranslate.hook";
 
 const LogoConfigInput = ({
   logo,
@@ -11,14 +13,16 @@ const LogoConfigInput = ({
   setLogo: Dispatch<SetStateAction<File | null>>;
 }) => {
   const isMobile = useMediaQuery("(max-width: 560px)");
+  const t = useTranslate();
 
   return (
     <Group position="apart">
       <Stack style={{ maxWidth: isMobile ? "100%" : "40%" }} spacing={0}>
-        <Title order={6}>Logo</Title>
+        <Title order={6}>
+          <FormattedMessage id="admin.config.general.logo" />
+        </Title>
         <Text color="dimmed" size="sm" mb="xs">
-          Change your logo by uploading a new image. The image must be a PNG and
-          should have the format 1:1.
+          <FormattedMessage id="admin.config.general.logo.description" />
         </Text>
       </Stack>
       <Stack></Stack>
@@ -29,7 +33,7 @@ const LogoConfigInput = ({
           value={logo}
           onChange={(v) => setLogo(v)}
           accept=".png"
-          placeholder="Pick image"
+          placeholder={t("admin.config.general.logo.placeholder")}
         />
       </Box>
     </Group>