Use hatchling instead of setuptools

Author: rnixx

pyproject.toml

@@ -1,6 +1,6 @@
 [build-system]
-requires = ["setuptools>=61.0"]
-build-backend = "setuptools.build_meta"
+requires = ["hatchling"]
+build-backend = "hatchling.build"
 
 [project]
 name = "node"
@@ -40,14 +40,5 @@ test = [
 [project.urls]
 Homepage = "http://github.com/conestack/node"
 
-[tool.setuptools.packages.find]
-where = ["src"]
-
-[tool.setuptools]
-zip-safe = true
-
-[tool.setuptools.package-dir]
-"" = "src"
-
 [tool.zest-releaser]
 create-wheel = true