Add release workflow (#961)

## Summary

This PR adds a release workflow powered by `cargo-dist`. It's similar to
the version that's PR'd in Ruff
(https://github.com/astral-sh/ruff/pull/9559), with the exception that
it doesn't include the Docker build or the "update dependents" step for
pre-commit.

python/puffin/__main__.py

@@ -0,0 +1,39 @@
+import os
+import sys
+import sysconfig
+
+
+def find_puffin_bin() -> str:
+    """Return the puffin binary path."""
+
+    puffin_exe = "puffin" + sysconfig.get_config_var("EXE")
+
+    path = os.path.join(sysconfig.get_path("scripts"), puffin_exe)
+    if os.path.isfile(path):
+        return path
+
+    if sys.version_info >= (3, 10):
+        user_scheme = sysconfig.get_preferred_scheme("user")
+    elif os.name == "nt":
+        user_scheme = "nt_user"
+    elif sys.platform == "darwin" and sys._framework:
+        user_scheme = "osx_framework_user"
+    else:
+        user_scheme = "posix_user"
+
+    path = os.path.join(sysconfig.get_path("scripts", scheme=user_scheme), puffin_exe)
+    if os.path.isfile(path):
+        return path
+
+    raise FileNotFoundError(path)
+
+
+if __name__ == "__main__":
+    puffin = os.fsdecode(find_puffin_bin())
+    if sys.platform == "win32":
+        import subprocess
+
+        completed_process = subprocess.run([puffin, *sys.argv[1:]])
+        sys.exit(completed_process.returncode)
+    else:
+        os.execvp(puffin, [puffin, *sys.argv[1:]])