Fixes parameters for running nimlangserver.cmd on Windows fixes #80 (#84)

Author: jmgomez

src/nimLsp.nim

@@ -243,8 +243,8 @@ proc startLanguageServer(tryInstall: bool, state: ExtensionState) {.async.} =
 
     let
       serverOptions = ServerOptions{
-        run: Executable{command: nimlangserver, transport: TransportKind.stdio },
-        debug: Executable{command: nimlangserver, transport: TransportKind.stdio }
+        run: Executable{command: nimlangserver, transport: TransportKind.stdio, options: ExecutableOptions(shell: true)},
+        debug: Executable{command: nimlangserver, transport: TransportKind.stdio, options: ExecutableOptions(shell: true)}
       }
       clientOptions = LanguageClientOptions{
         documentSelector: @[DocumentFilter(scheme: cstring("file"),

src/platform/languageClientApi.nim

@@ -15,10 +15,15 @@ type
     pipe = 2,
     socket = 3
 
+  ExecutableOptions* = ref ExecutableOptionsObj
+  ExecutableOptionsObj {.importc.} = object of JsObject
+    shell*: bool
+
   Executable* = ref ExecutableObj
   ExecutableObj {.importc.} = object of JsObject
     command*: cstring
     transport*: TransportKind
+    options*: ExecutableOptions
 
   ServerOptions* = ref ServerOptionsObj
   ServerOptionsObj* {.importc.} = object of JsObject