Refactor project for setuptools

pyproject.toml

@@ -4,7 +4,8 @@ requires = ["setuptools", "cython", "wheel"]
 build-backend = "setuptools.build_meta"
 
 [tool.setuptools]
-packages = ["fimdlp"]
+#packages = ["fimdlp"]
+package-dir = { "" = "src" }
 license-files = ["LICENSE"]
 
 [tool.setuptools.dynamic]
@@ -18,7 +19,7 @@ authors = [
 ]
 dynamic = ['version']
 dependencies = ["numpy", "joblib"]
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 classifiers = [
     "Development Status :: 3 - Alpha",
     "Intended Audience :: Science/Research",
@@ -40,7 +41,7 @@ Home = "https://github.com/doctorado-ml/FImdlp"
 
 [tool.black]
 line-length = 79
-target_version = ['py38', 'py39', 'py310']
+target_version = ['py39', 'py310']
 include = '\.pyi?$'
 exclude = '''
 /(