Refactor Localization Service

- Updated LocalizationService interface to load localization data from a Path instead of InputStream.
- Enhanced LocalizationServiceImpl to handle loading and saving of localization data from directories.
- Introduced LocalizationLanguage and LocalizationMetadata classes to encapsulate language entries and metadata.
- Refactored Localizations class to manage language files and metadata more effectively.
- Added unit tests for loading localizations from directory and verifying language translations.
- Created YAML files for English and German languages along with a metadata file for localization information.

data/i18n/de.yaml

@@ -0,0 +1,13 @@
+---
+shortName: "de"
+entries:
+  test-1: "hallo"
+  test-2: "welt"
+  test-3: "Willkommen zu Exo's Spieleengine Demo!"
+  test-4: "Design auswählen"
+  test-5: "Dies ist eine Nachricht\\n123...\\nSchönen Tag noch!"
+  test-6: "Ok"
+  test-7: "Audio umschalten"
+  test-8: "ScrollArea Demo"
+  test-9: "Sprache auswählen"
+  test-10: "Aktuell: "

data/i18n/en.yaml

@@ -0,0 +1,13 @@
+---
+shortName: "en"
+entries:
+  test-1: "hello"
+  test-2: "world"
+  test-3: "Welcome to Exo's Game Engine Demo!"
+  test-4: "Select Theme"
+  test-5: "This is a message\\n123...\\nHave a nice day!"
+  test-6: "OK"
+  test-7: "Toggle Audio"
+  test-8: "ScrollArea Demo"
+  test-9: "Select Language"
+  test-10: "Current: "

data/i18n/i18n.yaml

@@ -1,42 +0,0 @@
----
-curId: 10
-descriptions:
-  test-2: ""
-  test-1: "aaa"
-  test-8: ""
-  test-7: ""
-  test-6: ""
-  test-5: ""
-  test-4: ""
-  test-3: ""
-languages:
-  en:
-    test-1: "hello"
-    test-2: "world"
-    test-3: "Welcome to Exo's Game Engine Demo!"
-    test-4: "Select Theme"
-    test-5: "This is a message\\n123...\\nHave a nice day!"
-    test-6: "OK"
-    test-7: "Toggle Audio"
-    test-8: "ScrollArea Demo"
-    test-9: "Select Language"
-    test-10: "Current: "
-  de:
-    test-1: "hallo"
-    test-2: "welt"
-    test-3: "Willkommen zu Exo's Spieleengine Demo!"
-    test-4: "Design auswählen"
-    test-5: "Dies ist eine Nachricht\\n123...\\nSchönen Tag noch!"
-    test-6: "Ok"
-    test-7: "Audio umschalten"
-    test-8: "ScrollArea Demo"
-    test-9: "Sprache auswählen"
-    test-10: "Aktuell: "
-languagesInfo:
-  en:
-    name: "English"
-    shortName: "en"
-  de:
-    name: "Deutsch"
-    shortName: "de"
-prefix: "test"

data/i18n/metadata.yaml

@@ -0,0 +1,9 @@
+---
+languagesInfo:
+  en:
+    name: "English"
+    shortName: "en"
+  de:
+    name: "Deutsch"
+    shortName: "de"
+prefix: "test"