fix: Failed to install submodules of filer (#1544)

* fix: Submodules not installed

* Update pyproject.toml

* Inlcude License

* add ruff config

Author: fsbraun

MANIFEST.in

@@ -57,10 +57,13 @@ heif = ["pillow-heif"]
 Homepage = "https://github.com/django-cms/django-filer"
 
 [tool.setuptools]
-packages = ["filer"]
 include-package-data = true
 zip-safe = false
 
+[tool.setuptools.packages.find]
+where = ["."]
+include = ["filer*", "LICENSE"]
+
 [tool.setuptools.dynamic]
 version = {attr = "filer.__version__"}
 
@@ -110,4 +113,8 @@ sections = [
 ]
 known_first_party = ["filer"]
 known_cms = ["cms", "menus"]
-known_django = ["django"]
+known_django = ["django"]
+
+[tool.ruff]
+src = ["filer"]
+exclude = ["*/migrations/*"]