Rename to shadowsocks-c with libuv, async DNS and CI lint (#3051)

Rename the project to shadowsocks-c while retaining ss-* commands, the embedding ABI, and legacy library/package lookup compatibility.

Replace libev with bundled libuv for IOCP/kqueue event backends, expand asynchronous runtime DNS coverage, and add actionlint/Ruff with strict clang-tidy failure handling. Validate native platforms, static builds, packaging, interoperability, sanitizers, and canonical/legacy consumers.

All 22 hosted checks pass at reviewed head a8493250eb.

scripts/git_archive.sh

@@ -2,7 +2,7 @@
 # Backward-compatible maintainer entrypoint for the offline release archive.
 set -euo pipefail
 root=$(git rev-parse --show-toplevel)
-name=shadowsocks-libev
+name=shadowsocks-c
 directory=$root
 while getopts "n:o:" opt; do
     case "$opt" in

scripts/source_archive.py

@@ -16,7 +16,7 @@ import tarfile
 def main():
     parser = argparse.ArgumentParser(description=__doc__)
     parser.add_argument("output", type=Path)
-    parser.add_argument("--prefix", default="shadowsocks-libev-3.3.6")
+    parser.add_argument("--prefix", default="shadowsocks-c-3.3.6")
     args = parser.parse_args()
     root = Path(__file__).resolve().parents[1]
     if "/" in args.prefix or args.prefix in ("", ".", ".."):