fix: include Jinja2 templates in wheel via package-data

The templates/ directories have no __init__.py so setuptools
packages.find omits them. Add package-data glob to include all
.j2 files under nemo_run.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Signed-off-by: oliver könig <okoenig@nvidia.com>

Author: ko3n1g

pyproject.toml

@@ -101,6 +101,9 @@ build-backend = "setuptools.build_meta"
 [tool.setuptools.packages.find]
 include = ["nemo_run*"]
 
+[tool.setuptools.package-data]
+nemo_run = ["**/*.j2"]
+
 [tool.setuptools.dynamic]
 version = { attr = "nemo_run.package_info.__version__" }