Use bash-language-server 2.0.0

Noteworthy changes:
* Upgrade dependencies
* Adds support for completing command line arguments
(bash-lsp/bash-language-server#294)
* Default configuration change: parsing errors are not highlighted as
problems (as the grammar is buggy)

Author: akurtakov

org.eclipse.shellwax.core/src/org/eclipse/shellwax/internal/BashLanguageServer.java

@@ -29,7 +29,7 @@
 import org.eclipse.wildwebdeveloper.embedder.node.NodeJSManager;
 
 public class BashLanguageServer extends ProcessStreamConnectionProvider {
-	private static final String LS_VERSION = "1.16.1";
+	private static final String LS_VERSION = "2.0.0";
 	private static final String LOCAL_PATH = "/.local/share/shellwax/"+LS_VERSION;
 	private static final String LS_MAIN = "/node_modules/.bin/bash-language-server";
 	private static final String LS_MAIN_WIN32 = "/bash-language-server";