Debugging and introspecting java code via dap-mode/lsp-java

I am working on a new package `dap-mode` which is using [Debug Adapter Protocol](https://microsoft.github.io/debug-adapter-protocol/) which currently supports debugging java. Here it is guide how it can be configured to debug java code when doing `cider` repl session: [debug java](https://github.com/emacs-lsp/dap-mode/wiki/Clojure:-debugging-and-introspecting-Java-Code) (Edited) . I believe that it may be usefull for clojure programmer who are doing java interoperability programming.

Additionally, if `cider` provides information for the currenly executed line when the debugger is in clj source file it may be used to debug clojure source as well.