ci: Rename NEWS.md to RELEASE.md.

ci: Build fewer packages in non-main branch.

ci: Add lint phase for rust-check.

Signed-off-by: Jason Volk <jason@zemos.net>

RELEASE.md

@@ -0,0 +1,17 @@
+# One Tuwunel
+
+June 6, 2025
+
+### New Features
+
+- LDAP authentication. Thanks @RatCornu!
+- Podman systemd. Thanks @everypizza1!
+
+### Bug Fixes
+
+- Several panics fixed by Jade Ellis (@JadedBlueEyes) et al. Thank you 🙏
+
+### Honorable Mentions
+
+- Special thanks to Peter Gervai (@grinapo) for hosting the fanclub room; also
+for documentation and wiki contributions.