feat(plc4j/ads): Add STRING and WSTRING to getDataTypeTableEntry.

[fdupont-epsilia]

Add STRING and WSTRING to getDataTypeTableEntry.
serializePlcValue, remove check directly in dataTypeTable, only use getDataTypeTableEntry.

[fdupont-epsilia]

Could this Pull Request be merged? Considering ADS works, and no modification in opcua.

test (21, ubuntu-latest)

[INFO] Protocols: ADS ..................................... SUCCESS [  2.192 s]
[INFO] PLC4J: Driver: ADS ................................. SUCCESS [ 12.046 s]

[INFO] PLC4J: Driver: OPC UA .............................. FAILURE [09:20 min]

Error:  Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:3.5.2:test (default-test) on project plc4j-driver-opcua: 

2024-11-19 20:03:54,327 ERROR | nioEventLoopGroup-123-1 | o.a.plc4x.java.opcua.protocol.OpcuaSubscriptionHandle   | Invalid Tag Integer, subscription created without this tag 
2024-11-19 20:03:55,295  WARN | nioEventLoopGroup-123-1 | o.a.plc4x.java.opcua.protocol.OpcuaSubscriptionHandle   | Publish request of subscription 1 resulted in error reported by server 
java.util.concurrent.CompletionException: org.apache.plc4x.java.api.exceptions.PlcInvalidTagException: Integer invalid

[chrisdutz]

Looks good to me ... haven't had the time to test it in my setup, but I wouldn't want to block merging this for that reason.