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/account/ThemeSwitcher.tsx

@@ -9,12 +9,12 @@ import {
 import { useColorScheme } from "@mantine/hooks";
 import { useState } from "react";
 import { TbDeviceLaptop, TbMoon, TbSun } from "react-icons/tb";
-import usePreferences from "../../hooks/usePreferences";
+import { FormattedMessage } from "react-intl";
+import userPreferences from "../../utils/userPreferences.util";
 
 const ThemeSwitcher = () => {
-  const preferences = usePreferences();
   const [colorScheme, setColorScheme] = useState(
-    preferences.get("colorScheme")
+    userPreferences.get("colorScheme")
   );
   const { toggleColorScheme } = useMantineColorScheme();
   const systemColorScheme = useColorScheme();
@@ -23,7 +23,7 @@ const ThemeSwitcher = () => {
       <SegmentedControl
         value={colorScheme}
         onChange={(value) => {
-          preferences.set("colorScheme", value);
+          userPreferences.set("colorScheme", value);
           setColorScheme(value);
           toggleColorScheme(
             value == "system" ? systemColorScheme : (value as ColorScheme)
@@ -34,7 +34,9 @@ const ThemeSwitcher = () => {
             label: (
               <Center>
                 <TbMoon size={16} />
-                <Box ml={10}>Dark</Box>
+                <Box ml={10}>
+                  <FormattedMessage id="account.theme.dark" />
+                </Box>
               </Center>
             ),
             value: "dark",
@@ -43,7 +45,9 @@ const ThemeSwitcher = () => {
             label: (
               <Center>
                 <TbSun size={16} />
-                <Box ml={10}>Light</Box>
+                <Box ml={10}>
+                  <FormattedMessage id="account.theme.light" />
+                </Box>
               </Center>
             ),
             value: "light",
@@ -52,7 +56,9 @@ const ThemeSwitcher = () => {
             label: (
               <Center>
                 <TbDeviceLaptop size={16} />
-                <Box ml={10}>System</Box>
+                <Box ml={10}>
+                  <FormattedMessage id="account.theme.system" />
+                </Box>
               </Center>
             ),
             value: "system",