Refactor nrepl communication to handle Transport manually

Fixes #65

Fix a exception that happens after some seconds of repl running:

If it's a long-running mostly idle daemon process, consider overriding OSProcessHandler#readerOptions with 'BaseOutputReader.Options.forMostlySilentProcess()' to reduce CPU usage.
Command line: lein update-in :dependencies conj "[nrepl/nrepl \"1.0.0\"]" -- update-in :plugins conj "[cider/cider-nrepl \"0.45.0\"]" -- repl :headless :host localhost
java.lang.Throwable: Process creation:
    at com.intellij.execution.process.BaseOSProcessHandler.<init>

This PR refactors how we communicate with NREPL, the major problem is that nrepl is a server so it can send messages at any time through the socket, and we were ignoring those messages, only caring by the ones we sent sync.

Code snippets to test:


(deftest a-test
  (println "foo")
  (is (= {:a 2 :b 2}
         (sample.core/|fob))))

(future (Thread/sleep 1000) (println "foo"))

afucher / clojure-repl-intellij

Refactor nrepl communication to handle Transport manually #67