build: add build setup and manifest files

MANIFEST.in

@@ -0,0 +1,3 @@
+include README.md
+include LICENSE
+include requirements.txt

setup.py

@@ -0,0 +1,62 @@
+import re
+from setuptools import setup
+
+version = ""
+with open("jikan4snek/__init__.py") as f:
+    version = re.search(
+        r'^__version__\s*=\s*[\'"]([^\'"]*)[\'"]', f.read(), re.MULTILINE
+    ).group(1)
+
+
+requirements = []
+with open("requirements.txt") as f:
+    requirements = f.read().splitlines()
+
+
+if not version:
+    raise RuntimeError("version is not set")
+
+readme = ""
+with open("README.md", encoding="utf8") as f:
+    readme = f.read()
+
+setup(
+    name="jikan4snek",
+    author="sinkaroid",
+    author_email="[email protected]",
+    version=version,
+    long_description=readme,
+    long_description_content_type = "text/markdown",
+    url="https://github.com/ScathachGrip/jikan4snek",
+    project_urls={
+        "CI": "https://github.com/ScathachGrip/jikan4snek/actions",
+        "Funding": "https://github.com/sponsors/sinkaroid",
+        "Issue tracker": "https://github.com/ScathachGrip/jikan4snek/issues/new/choose",
+        "Documentation": "https://ScathachGrip.github.io/jikan4snek",
+    },
+    packages=["jikan4snek", "jikan4snek.client", "jikan4snek.base"],
+    license="MIT",
+    classifiers=[
+        "Framework :: AsyncIO",
+        "Development Status :: 3 - Alpha",
+        "Intended Audience :: Developers",
+        "License :: OSI Approved :: MIT License",
+        "Natural Language :: English",
+        "Operating System :: OS Independent",
+        "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
+        "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
+        "Topic :: Games/Entertainment",
+        "Topic :: Internet :: WWW/HTTP",
+        "Topic :: Software Development :: Libraries"
+    ],
+    description="Python client for Jikan.moe, MyAnimeList's unofficial API",
+    include_package_data=True,
+    keywords=[
+        "jikan",
+        "myanimelist",
+        "mal"
+    ],
+    install_requires=requirements,
+)