Multiple image upload

[SleeplessOne1917]

This closes #777
This does what #812 by @sam365724 does but using the updated client.

[SleeplessOne1917]

We'll have to add a translation for this.

[dessalines]

Make a PR over on lemmy-translations for me to merge. Here's an example of using counts: https://github.com/LemmyNet/lemmy-translations/blob/main/translations/en.json#L148

You can grep the lemmy-ui for any of those formatted count type strings to see how to do in the UI.

[dessalines]

Just a few minor things, and the one i18n string to add. After the new string gets merged by me into lemmy-translations, you can run:

git submodule update --remote
git add lemmy-translations

[dessalines]

Make a PR over on lemmy-translations for me to merge. Here's an example of using counts: https://github.com/LemmyNet/lemmy-translations/blob/main/translations/en.json#L148

You can grep the lemmy-ui for any of those formatted count type strings to see how to do in the UI.

[dessalines]

Okay, now that the translations merged, you should just have to run:

git submodule update --remote
git add lemmy-translations
git commit -m"Updating translations"
git push

[SleeplessOne1917]

Woodpecker is getting a build failure:

+ yarn lint
yarn run v1.22.19
$ node generate_translations.js && tsc --noEmit && eslint --report-unused-disable-directives --ext .js,.ts,.tsx src && prettier --check 'src/**/*.tsx'
src/shared/components/common/markdown-textarea.tsx:311:36 - error TS2345: Argument of type 'I18nKeys' is not assignable to parameter of type 'NoOptionI18nKeys | NoOptionI18nKeys[]'.
  Type '"click_to_delete_picture"' is not assignable to type 'NoOptionI18nKeys | NoOptionI18nKeys[]'.

311         data-tippy-content={i18n.t(type)}
                                       ~~~~

src/shared/components/common/markdown-textarea.tsx:312:28 - error TS2345: Argument of type 'I18nKeys' is not assignable to parameter of type 'NoOptionI18nKeys | NoOptionI18nKeys[]'.

312         aria-label={i18n.t(type)}
                               ~~~~


Found 2 errors in the same file, starting at: src/shared/components/common/markdown-textarea.tsx:311

error Command failed with exit code 2.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

I don't know why it's doing this considering the code it's complaining about in the build isn't actually in the PR. This is what's actually in the PR's code.

[SleeplessOne1917]

I pushed a small change an hour after the last one and the CI build worked this time. Disregard my last comment.

[dessalines]

Looks great, thx again!