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/Backlinks.tsx

@@ -1,14 +1,15 @@
 import { QuartzComponentConstructor, QuartzComponentProps } from "./types"
 import style from "./styles/backlinks.scss"
 import { resolveRelative, simplifySlug } from "../util/path"
+import { i18n } from "../i18n/i18next"
 import { classNames } from "../util/lang"
 
-function Backlinks({ fileData, allFiles, displayClass }: QuartzComponentProps) {
+function Backlinks({ fileData, allFiles, displayClass, cfg }: QuartzComponentProps) {
   const slug = simplifySlug(fileData.slug!)
   const backlinkFiles = allFiles.filter((file) => file.links?.includes(slug))
   return (
     <div class={classNames(displayClass, "backlinks")}>
-      <h3>Backlinks</h3>
+      <h3>{i18n(cfg.locale, "backlinks.backlinks")}</h3>
       <ul class="overflow">
         {backlinkFiles.length > 0 ? (
           backlinkFiles.map((f) => (
@@ -19,7 +20,7 @@ function Backlinks({ fileData, allFiles, displayClass }: QuartzComponentProps) {
             </li>
           ))
         ) : (
-          <li>No backlinks found</li>
+          <li>{i18n(cfg.locale, "backlinks.noBlacklinksFound")}</li>
         )}
       </ul>
     </div>