Refactor pyproject.toml: move py-modules entry under [tool.setuptools] and remove duplicate entry

Author: decodingchris

pyproject.toml

@@ -11,7 +11,6 @@ authors = [
 ]
 license = "MIT"
 readme = "README.md"
-py_modules = ["main"]
 requires-python = ">=3.10"
 classifiers = [
     "Programming Language :: Python :: 3",
@@ -30,4 +29,7 @@ tasknow = "main:main"
 
 [project.urls]
 Homepage = "https://github.com/decodingchris/TaskNow"
-Issues = "https://github.com/decodingchris/TaskNow/issues"
+Issues = "https://github.com/decodingchris/TaskNow/issues"
+
+[tool.setuptools]
+py-modules = ["main"]