feat: added Slovenian Translation (#2733)

# Description

Added Slovenian Translation by instructions for adding new translations.

## Checklist

- [x] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [x] I have performed a self-review of my own code
- [X] I have attached images of the change if it is UI based
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] If my code has heavily changed functionality I have updated
relevant docs on [Stirling-PDFs doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
- [x] My changes generate no new warnings
- [x] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

---------

Co-authored-by: blaz.carli <[email protected]>

scripts/ignore_translation.toml

@@ -211,6 +211,11 @@ ignore = [
     'watermark.type.1',
 ]
 
+[si_SL]
+ignore = [
+    'language.direction',
+]
+
 [sr_LATN_RS]
 ignore = [
     'language.direction',