Convert to proper python package

pyproject.toml

@@ -1,20 +1,62 @@
+[build-system]
+requires = ["setuptools>=65.0", "wheel"]
+build-backend = "setuptools.build_meta"
+
 [project]
-name = "plot-gallery"
+name = "gallery"
 version = "0.1.0"
-description = "Host your plots on a personal website"
-authors = [
-    { name = "K. Schmidt" }
-]
+description = "Scientific Gallery Generator - Create responsive HTML galleries from plot collections"
 readme = "README.md"
-requires-python = ">=3.9"
-dependencies = [
-    "jinja2",
-    "pyyaml",
+requires-python = ">=3.8"
+license = {text = "MIT"}
+authors = [
+    {name = "K. Schmidt"},
 ]
+keywords = [
+    "gallery",
+    "plots",
+    "scientific-computing",
+    "html-generation",
+    "pdf-to-png",
+]
+classifiers = [
+    "Development Status :: 3 - Alpha",
+    "Intended Audience :: Science/Research",
+    "License :: OSI Approved :: MIT License",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Topic :: Scientific/Engineering :: Visualization",
+]
+
+dependencies = [
+    "Jinja2>=3.0.0",
+    "PyYAML>=5.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=7.0",
+    "black>=22.0",
+    "pylint>=2.0",
+    "mypy>=0.900",
+]
+
+[project.scripts]
+gallery = "gallery.cli:main"
+
+[tool.setuptools]
+packages = ["gallery", "gallery.utils"]
+package-data = {gallery = ["templates/*", "assets/css/*", "assets/js/*"]}
+include-package-data = true
 
 [tool.black]
 line-length = 120
-target-version = ['py39']
+target-version = ['py38']
 
 [tool.isort]
 profile = "black"
@@ -22,8 +64,4 @@ line_length = 120
 
 [tool.flake8]
 max-line-length = 120
-extend-ignore = ["E203", "W503"]
-
-[build-system]
-requires = ["setuptools>=61.0"]
-build-backend = "setuptools.build_meta"
+extend-ignore = ["E203", "W503"]