feat(debugger): possibility to disable the target . in a robotcode launch configurations with null, to append your own targets in args

Author: d-biehl

package.json

@@ -824,7 +824,7 @@
           "launch": {
             "properties": {
               "target": {
-                "type": "string",
+                "type": ["string", "null"],
                 "description": "The .robot file or a folder containing .robot files to be launched.",
                 "default": "${file}"
               },

robotcode/debugger/launcher/server.py

@@ -235,7 +235,7 @@ async def _launch(
         if target:
             run_args.append(target)
 
-        if not paths and not target:
+        if target is not None and not paths and not target:
             run_args.append(".")
 
         env = {k: ("" if v is None else str(v)) for k, v in env.items()} if env else {}