[Quick Accent] Add Maltese language (#39473)

# **PR inspired by: #32862**

<!-- Enter a brief description/summary of your PR here. What does it
fix/what does it change/how was it tested (even manually, if necessary)?
-->
## Summary of the Pull Request
Adds [Maltese latin alphabet
symbols](https://en.wikipedia.org/wiki/Maltese_language#Alphabet) (ċ, ġ,
ħ, ż), [grave accented
vowels](https://en.wikipedia.org/wiki/Grave_accent#Stress) (à, è, ì, ò,
ù) and the Euro (€) sign [Malta's currency] as a supported language into
Quick Accent.

![2025-05-15 22_04_53-PowerToys Settings-Quick
Accent-Maltese](https://github.com/user-attachments/assets/fb010b5e-abe3-4cf2-8191-f7ecf551d429)


![Quick-Accent-Maltese-Preview](https://github.com/user-attachments/assets/688588a2-34d5-4f3b-bd76-752d952ee7d8)

<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist

- [x] **Closes:** #39472
- [x] **Communication:** I've
[proposed](https://github.com/microsoft/PowerToys/issues/28769#issuecomment-2884852675)
to add this feature in the thread
- [x] **Tests:** No need
- [x] **Localization:** All end user facing strings can be localized
- [x] **Dev docs:** No need
- [x] **New binaries:** None
- [x] **Documentation updated:** No need

<!-- Describe how you validated the behavior. Add automated tests
wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed
Observing

src/settings-ui/Settings.UI/Strings/en-us/Resources.resw

@@ -3564,6 +3564,9 @@ Activate by holding the key for the character you want to add an accent to, then
   <data name="QuickAccent_SelectedLanguage_Macedonian" xml:space="preserve">
     <value>Macedonian</value>
   </data>
+  <data name="QuickAccent_SelectedLanguage_Maltese" xml:space="preserve">
+    <value>Maltese</value>
+  </data>
   <data name="QuickAccent_SelectedLanguage_Maori" xml:space="preserve">
     <value>Maori</value>
   </data>

src/settings-ui/Settings.UI/ViewModels/PowerAccentViewModel.cs

@@ -52,6 +52,7 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
             new PowerAccentLanguageModel("KU", "QuickAccent_SelectedLanguage_Kurdish", LanguageGroup),
             new PowerAccentLanguageModel("LT", "QuickAccent_SelectedLanguage_Lithuanian", LanguageGroup),
             new PowerAccentLanguageModel("MK", "QuickAccent_SelectedLanguage_Macedonian", LanguageGroup),
+            new PowerAccentLanguageModel("MT", "QuickAccent_SelectedLanguage_Maltese", LanguageGroup),
             new PowerAccentLanguageModel("MI", "QuickAccent_SelectedLanguage_Maori", LanguageGroup),
             new PowerAccentLanguageModel("NO", "QuickAccent_SelectedLanguage_Norwegian", LanguageGroup),
             new PowerAccentLanguageModel("PI", "QuickAccent_SelectedLanguage_Pinyin", LanguageGroup),