chore: Modernize packaging (#110)

- pypa/setuptools#4870
- pypa/setuptools#4910
- astral-sh/uv#12440
- astral-sh/uv#12441
- meltano/meltano#9157

Author: edgarrmondragon

MANIFEST.in

@@ -0,0 +1,35 @@
+[project]
+name = "tap-gitlab"
+version = "0.10.0"
+description = "Singer.io tap for extracting data from the GitLab API"
+authors = [
+    { name = "Meltano Team && Stitch" },
+]
+readme = "README.md"
+url = "https://singer.io"
+classifiers = [
+    "Programming Language :: Python :: 3 :: Only",
+]
+license = "AGPL-3.0"
+license-files = [
+    "LICENSE",
+]
+dependencies = [
+    "singer-python==6.1.0",
+    "requests==2.32.3",
+    "strict-rfc3339==0.7",
+    "backoff==2.2.1",
+]
+requires-python = ">=3.8"
+
+[project.scripts]
+tap-gitlab = "tap_gitlab:main"
+
+[build-system]
+build-backend = "hatchling.build"
+requires = [
+  "hatchling==1.27",
+]
+
+[tool.uv]
+build-constraint-dependencies = ["setuptools<78"]