Merge 'bindings/java: Change logger dependency ' from Kim Seon Woo

# The purpose of this PR
- Current implementation forces users to use logback as their logging
framework
# Changes
- Only add abstraction layer for loggin(which is slf4j in this case)
- In tests, use logback to log out messages(this doesn't affect the
users)
# References
https://github.com/tursodatabase/limbo/issues/615

Closes #863

bindings/java/src/test/resources/logback.xml

@@ -5,7 +5,7 @@
         </encoder>
     </appender>
 
-    <root level="debug">
+    <root level="${LOG_LEVEL:-info}">
         <appender-ref ref="STDOUT" />
     </root>
 </configuration>