Added localization stuff

localization.xml

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+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>      
+<localization>
+    <language key="de" name="Deutsch" flagPath="localization/flag_de.png"/>
+    <language key="en" name="English" flagPath="localization/flag_uk_us.png" default="true"/>
+    <entry name="t_tutorial_reticule">
+        <text lang="de" type="inline" value="Exponat anvisieren"/>
+        <text lang="en" type="inline" value="Aim at exhibit"/>
+    </entry>
+    <entry name="t_tutorial_settings">
+        <text lang="de" type="inline" value="Einstellungen öffnen"/>
+        <text lang="en" type="inline" value="Open settings"/>
+    </entry>
+    <entry name="t_tutorial_select">
+        <text lang="de" type="inline" value="Exponat auswählen"/>
+        <text lang="en" type="inline" value="Select exhibit"/>
+    </entry>
+    <entry name="t_menu_button_color">
+        <text lang="de" type="inline" value="Farbe"/>
+        <text lang="en" type="inline" value="Color"/>
+    </entry>
+    <entry name="t_menu_button_language">
+        <text lang="de" type="inline" value="Sprache"/>
+        <text lang="en" type="inline" value="Language"/>
+    </entry>
+    <entry name="t_menu_button_tutorial">
+        <text lang="de" type="inline" value="Anleitung"/>
+        <text lang="en" type="inline" value="Tutorial"/>
+    </entry>
+    <entry name="t_menu_button_credits">
+        <text lang="de" type="inline" value="Credits"/>
+        <text lang="en" type="inline" value="Credits"/>
+    </entry>
+    <entry name="t_credits">
+        <text lang="de" type="file" value="localization/t_credits_de.txt"/>
+        <text lang="en" type="file" value="localization/t_credits_en.txt"/>
+    </entry>
+</localization>

localization/t_credits_de.txt

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+Diese Anwendung wurde als Projektarbeit im 6. Semester von Studenten der Hochschule für angewandte Wissenschaften Würzburg-Schweinfurt erstellt.
+
+Entwicklerteam:
+René Ziegler
+Matthias Kleinhenz
+Alexander Frühwald
+
+Betreuer FHWS:
+Prof. Dr. Frank Deinzer
+Toni Fetzer
+
+Verantwortlicher im Auftrag des Reichstadtmuseums in Rothenburg:
+Dr. Hellmuth Möhring
+
+Die in dieser App verwendeten Icons sind Teil der Google Material Icon Library, abrufbar unter https://material.io/icons/ und sind lizenziert unter der Apache License Version 2.0.

localization/t_credits_en.txt

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+This app has been created as a project by 6th semester students at the University of Applied Sciences Wurzburg-Schweinfurt.
+
+Developer Team:
+René Ziegler
+Matthias Kleinhenz
+Alexander Frühwald
+
+Project Monitoring FHWS:
+Prof. Dr. Frank Deinzer
+Toni Fetzer
+
+Responsible on behalf of the Reichstadtmuseum of Rothenburg:
+Dr. Hellmuth Moehring
+
+Icons used in this App are part of the Google Material Icon Library, available at https://material.io/icons/ and are licensed under the Apache License Version 2.0.