Add pyproject.toml and update URL in setup.py

Introduce `pyproject.toml` for project configuration and dependency management. Correct the URL in `setup.py` to accurately reflect the repository's homepage for `ssalib`.

pyproject.toml

@@ -0,0 +1,50 @@
+[build-system]
+requires = ["setuptools", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "ssalib"
+version = "0.1.0a1"
+description = "Singular Spectrum Analysis Library (SSALib)"
+readme = "README.md"
+readme-content-type = "text/markdown"
+requires-python = ">=3.9"
+license = {text = "BSD-3-Clause"}
+authors = [
+    {name = "Damien Delforge", email = "damien.delforge@adscian.be"},
+    {name = "Alice Alonso"}
+]
+urls = {homepage = "https://github.com/ADSCIAN/ssalib"}
+
+classifiers = [
+    "Development Status :: 3 - Alpha",
+    "Intended Audience :: Science/Research",
+    "License :: OSI Approved :: BSD License",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Topic :: Scientific/Engineering"
+]
+
+keywords = ["singular spectrum analysis", "time series", "decomposition"]
+
+[project.dependencies]
+joblib = "*"
+numpy = "*"
+matplotlib = "*"
+pandas = "*"
+scipy = "*"
+scikit-learn = "*"
+statsmodels = "*"
+
+[project.optional-dependencies]
+test = ["pytest", "pytest-cov"]
+dev = ["pytest", "pytest-cov", "black", "flake8"]
+
+[tool.setuptools.packages.find]
+where = ["src"]
+
+[tool.setuptools.package-data]
+"ssalib" = ["datasets/*.txt", "datasets/*.csv", "datasets/*.json"]

setup.py

@@ -14,7 +14,7 @@ def parse_requirements(filename):
     package_data={
         'ssalib': ['datasets/*.txt', 'datasets/*.csv', 'datasets/*.json']
     },
-    url='https://github.com/ADSCIAN/vassal',
+    url='https://github.com/ADSCIAN/ssalib',
     license='BSD-3-Clause',
     author='Damien Delforge, Alice Alonso',
     author_email='damien.delforge@adscian.be',