added localization to "preparing download" Message;

[jonah-iden]

Also added translations for newly localized values for german and english

Signed-off-by: Jonah Iden [email protected]

What it does

This fixes issue #11988
adds localization to the in the picture marked texts. Also added german translation for these.

How to test

(copied from issue)

1. start the browser application (the download command is not available on electron) with theia as a workpace
   

2. execute F1 > Configure Display Language, install a new language-pack, and restart the application
   

3. open the explorer
   

4. attempt to download a big resource (ex: node_modules) by right-clicking the directory and choosing the "download" command (will be localized)
   

5. confirm that the progress notification is not localized
   

Review checklist

• As an author, I have thoroughly tested my changes and carefully followed the review guidelines

Reminder for reviewers

• As a reviewer, I agree to behave in accordance with the review guidelines

[msujew]

Please remove the default values from the nls.json file. Looks good to me otherwise 👍