Add Spanish

¡Hola!

I didn't use any automated tool nor AI, so this should be good quality :)

I also made the shebang in the i18n recipe more generic (wasn't working
on NixOS).

README.md

@@ -143,7 +143,7 @@ If you want to add Japanese you will create a file `/src/i18n/jp/translations.ts
 
 ```
 export default {
-    Common: {
+    common: {
         continue: "続ける",
         ...
     }

justfile

@@ -7,7 +7,7 @@ pre:
     pnpm run pre-commit
 
 i18n LANG:
-    #!/bin/bash
+    #!/usr/bin/env bash
     pnpm eslint-path "./src/i18n/{{LANG}}/translations.ts" --rule "{internal-rules/check-i18n-keys: warn}"
 
 local:

src/i18n/config.ts

@@ -4,13 +4,17 @@ import { use } from "i18next";
 import LanguageDetector from "i18next-browser-languagedetector";
 
 import en from "~/i18n/en/translations";
+import es from "~/i18n/es/translations";
 import ko from "~/i18n/ko/translations";
 import pt from "~/i18n/pt/translations";
 
 export const resources = {
     en: {
         translations: en
     },
+    es: {
+        translations: es
+    },
     pt: {
         translations: pt
     },