chore: drop java backend

oetzi_words.iml

oetzi_words.sql

pom.xml

src/main/java/giovannimoretti/it/oetzi_words/Listener.java

...nimoretti/it/oetzi_words/servlets/CheckTranscription.java

...ava/giovannimoretti/it/oetzi_words/servlets/GetImage.java

...giovannimoretti/it/oetzi_words/sqlToolkit/SQL_Worker.java

...va/giovannimoretti/it/oetzi_words/utils/ConnectionDB.java

...iovannimoretti/it/oetzi_words/utils/SupportFunctions.java

src/main/webapp/WEB-INF/web.xml

src/main/webapp/assets/background_layers/Layer_0000_9.png

src/main/webapp/assets/background_layers/Layer_0001_8.png

src/main/webapp/assets/background_layers/Layer_0002_7.png

src/main/webapp/assets/background_layers/Layer_0003_6.png

...ain/webapp/assets/background_layers/Layer_0004_Lights.png

src/main/webapp/assets/background_layers/Layer_0005_5.png

src/main/webapp/assets/background_layers/Layer_0006_4.png

...ain/webapp/assets/background_layers/Layer_0007_Lights.png

src/main/webapp/assets/background_layers/Layer_0008_3.png

src/main/webapp/assets/background_layers/Layer_0009_2.png