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 <blaz.carli@arctur.si>

scripts/ignore_translation.toml

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

src/main/resources/static/images/flags/si.svg

@@ -0,0 +1,18 @@
+<svg xmlns="http://www.w3.org/2000/svg" id="flag-icons-si" viewBox="0 0 640 480">
+  <defs>
+    <clipPath id="si-a">
+      <path fill-opacity=".7" d="M-15 0h682.6v512H-15.1z"/>
+    </clipPath>
+  </defs>
+  <g fill-rule="evenodd" stroke-width="1pt" clip-path="url(#si-a)" transform="translate(14.1)scale(.9375)">
+    <path fill="#fff" d="M-62 0H962v512H-62z"/>
+    <path fill="#d50000" d="M-62 341.3H962V512H-62z"/>
+    <path fill="#0000bf" d="M-62 170.7H962v170.6H-62z"/>
+    <path fill="#d50000" d="M228.4 93c-4 61.6-6.4 95.4-15.7 111-10.2 16.8-20 29.1-59.7 44-39.6-14.9-49.4-27.2-59.6-44-9.4-15.6-11.7-49.4-15.7-111l5.8-2c11.8-3.6 20.6-6.5 27.1-7.8 9.3-2 17.3-4.2 42.3-4.7 25 .4 33 2.8 42.3 4.8q9.7 2.1 27.3 7.7z"/>
+    <path fill="#0000bf" d="M222.6 91c-3.8 61.5-7 89.7-12 103.2-9.6 23.2-24.8 35.9-57.6 48-32.8-12.1-48-24.8-57.7-48-5-13.6-8-41.7-11.8-103.3q17.4-5.6 27.1-7.7c9.3-2 17.3-4.3 42.3-4.7 25 .4 33 2.7 42.3 4.7a284 284 0 0 1 27.4 7.7z"/>
+    <path fill="#ffdf00" d="m153 109.8 1.5 3.7 7 1-4.5 2.7 4.3 2.9-6.3 1-2 3.4-2-3.5-6-.8 4-3-4.2-2.7 6.7-1z"/>
+    <path fill="#fff" d="m208.3 179.6-3.9-3-2.7-4.6-5.4-4.7-2.9-4.7-5.4-4.9-2.6-4.7-3-2.3-1.8-1.9-5 4.3-2.6 4.7-3.3 3-3.7-2.9-2.7-4.8-10.3-18.3-10.3 18.3-2.7 4.8-3.7 2.9-3.3-3-2.7-4.7-4.9-4.3-1.9 1.8-2.9 2.4-2.6 4.7-5.4 4.9-2.9 4.7-5.4 4.7-2.7 4.6-3.9 3a66 66 0 0 0 18.6 36.3 107 107 0 0 0 36.6 20.5 104 104 0 0 0 36.8-20.5c5.8-6 16.6-19.3 18.6-36.3"/>
+    <path fill="#ffdf00" d="m169.4 83.9 1.6 3.7 7 1-4.6 2.7 4.4 2.9-6.3 1-2 3.4-2-3.5-6-.8 4-3-4.2-2.7 6.6-1zm-33 0 1.6 3.7 7 .9-4.5 2.7 4.3 2.9-6.3 1-2 3.4-2-3.4-6-.9 4-3-4.2-2.7 6.7-1z"/>
+    <path fill="#0000bf" d="M199.7 203h-7.4l-7-.5-8.3-4h-9.4l-8.1 4-6.5.6-6.4-.6-8.1-4H129l-8.4 4-6.9.6-7.6-.1-3.6-6.2.1-.2 11.2 1.9 6.9-.5 8.3-4.1h9.4l8.2 4 6.4.6 6.5-.6 8.1-4h9.4l8.4 4 6.9.6 10.8-2 .2.4zm-86.4 9.5 7.4-.5 8.3-4h9.4l8.2 4 6.4.5 6.4-.5 8.2-4h9.4l8.3 4 7.5.5 4.8-6h-.1l-5.2 1.4-6.9-.5-8.3-4h-9.4l-8.2 4-6.4.6-6.5-.6-8.1-4H129l-8.4 4-6.9.6-5-1.3v.2l4.5 5.6z"/>
+  </g>
+</svg>

src/main/resources/templates/fragments/languages.html

@@ -23,6 +23,7 @@
                       <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="pt_PT"> <img th:src="@{'/images/flags/pt_pt.svg'}" alt="icon" width="20" height="15"> Português (PT)</a>
                       <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="ro_RO"> <img th:src="@{'/images/flags/ro.svg'}" alt="icon" width="20" height="15"> Romanian</a>
                       <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="sk_SK"> <img th:src="@{'/images/flags/sk.svg'}" alt="icon" width="20" height="15"> Slovensky</a>
+                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="sl_SI"> <img th:src="@{'/images/flags/si.svg'}" alt="icon" width="20" height="15"> Slovenian</a>
                       <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="sv_SE"> <img th:src="@{'/images/flags/se.svg'}" alt="icon" width="20" height="15"> Svenska</a>
                       <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="tr_TR"> <img th:src="@{'/images/flags/tr.svg'}" alt="icon" width="20" height="15"> Türkçe</a>
                       <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="ru_RU"> <img th:src="@{'/images/flags/ru.svg'}" alt="icon" width="20" height="15"> Русский</a>