Allow running python -m fortls

Author: awvwgk

fortls/__main__.py

@@ -0,0 +1,5 @@
+from . import main
+
+
+if __name__ == "__main__":
+    main()

test/setup_tests.py

@@ -26,7 +26,8 @@ def check_post_msg(result: dict, msg: str, severity: int):
 def run_request(request, fortls_args: list[str] = None):
     command = [
         sys.executable,
-        str(root_dir / "fortls.py"),
+        "-m",
+        "fortls",
         "--incremental_sync",
     ]
     if fortls_args: