fix: packaging issue for generated /sync files

UV respects `.gitgnore` by default and excludes generated `/sync` files from built packages.

In this PR we explicitly specify files that should be packed and ignore vcs

Author: ttypic

.gitignore

@@ -55,4 +55,5 @@ ably/types/options.py.orig
 test/ably/restsetup.py.orig
 
 .idea/**/*
-**/ably/sync/***
+ably/sync/**
+test/ably/sync/**

pyproject.toml

@@ -68,6 +68,23 @@ Repository = "https://github.com/ably/ably-python"
 requires = ["hatchling"]
 build-backend = "hatchling.build"
 
+[tool.hatch.build.targets.sdist]
+ignore-vcs = true
+include = [
+    "/ably",
+    "/COPYRIGHT",
+    "/README.md",
+    "/LICENSE",
+    "/LONG_DESCRIPTION.rst",
+    "/images",
+    "/setup.cfg",
+    "/pyproject.toml"
+]
+exclude = [
+    "**/*.pyc",
+    "**/__pycache__"
+]
+
 [tool.hatch.build.targets.wheel]
 packages = ["ably"]