2299 feature request language selection overhaul (#3017)

# Description of Changes

Please provide a summary of the changes, including:

- UI design of language drop down has changed
- too few languages were visible on the drop down
- Flags caused controversy 
- Scaling window due to size required adding some /@media CSS tags in
navbar css

Closes #(2299)

---

## Checklist

### General

- [x ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ x] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md)
(if applicable)
- [ x] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md)
(if applicable)
- [ x] I have performed a self-review of my own code
- [x ] My changes generate no new warnings

### Documentation

- [x ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] 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)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md#6-testing)
for more details.

---------

Co-authored-by: Anthony Stirling <[email protected]>

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

@@ -0,0 +1,7 @@
+<th:block th:fragment="languageEntry(code, name)">
+  <div class="lang-dropdown-item-wrapper">
+      <a th:if="${code} == 'en_GB' or ${#lists.isEmpty(@languages) or #lists.contains(@languages, code)}"
+        class="dropdown-item lang_dropdown-item" href="" th:data-bs-language-code="@{${code}}" th:text="${name}">
+      </a>
+  </div>
+</th:block>