Add support for java

[demircidogukan]

Could you please add support for Java? Maybe it can be solved by using multilspy instead of lsp-ws-proxy. Multilspy already has eclipse_jdtls support.

https://github.com/microsoft/multilspy/tree/main/src/multilspy/language_servers

https://microsoft.github.io/language-server-protocol/implementors/servers/ https://github.com/georgewfraser/java-language-server https://github.com/eclipse-jdtls/eclipse.jdt.ls