feat: Adding support for i18n (closes #462) (#738)

* fix: alt error mix with height/width

More granular detection of alt and resize in image

* fix: format

* feat: init i18n

* feat: add translation

* style: prettier for test

* fix: build-up the locale to fusion with dateLocale

* style: run prettier

* remove cursed file

* refactor: remove i18n library and use locale way instead

* format with prettier

* forgot to remove test

* prevent merging error

* format

* format

* fix: allow string for locale
- Check during translation if valid / existing locale
- Allow to use "en" and "en-US" for example
- Add fallback directly in the function
- Add default key in the function
- Add docstring to cfg.ts

* forgot item translation

* remove unused locale variable

* forgot to remove fr-FR testing

* format

quartz/components/Footer.tsx

@@ -1,20 +1,22 @@
 import { QuartzComponentConstructor, QuartzComponentProps } from "./types"
 import style from "./styles/footer.scss"
 import { version } from "../../package.json"
+import { i18n } from "../i18n/i18next"
 
 interface Options {
   links: Record<string, string>
 }
 
 export default ((opts?: Options) => {
-  function Footer({ displayClass }: QuartzComponentProps) {
+  function Footer({ displayClass, cfg }: QuartzComponentProps) {
     const year = new Date().getFullYear()
     const links = opts?.links ?? []
     return (
       <footer class={`${displayClass ?? ""}`}>
         <hr />
         <p>
-          Created with <a href="https://quartz.jzhao.xyz/">Quartz v{version}</a>, © {year}
+          {i18n(cfg.locale, "footer.createdWith")}{" "}
+          <a href="https://quartz.jzhao.xyz/">Quartz v{version}</a>, © {year}
         </p>
         <ul>
           {Object.entries(links).map(([text, link]) => (