chore: rename module from torrentclaw-cli to unarr

- Rename Go module path github.com/torrentclaw/torrentclaw-cli → github.com/torrentclaw/unarr
- Update all imports, ldflags, scripts, docs, and Docker config
- Add GitHub Actions release workflow (goreleaser on tag push)

go.mod

@@ -1,11 +1,13 @@
-module github.com/torrentclaw/torrentclaw-cli
+module github.com/torrentclaw/unarr
 
 go 1.25.0
 
 require (
 	github.com/BurntSushi/toml v1.6.0
+	github.com/anacrolix/dht/v2 v2.23.0
 	github.com/anacrolix/log v0.17.1-0.20251118025802-918f1157b7bb
 	github.com/anacrolix/torrent v1.61.0
+	github.com/anacrolix/upnp v0.1.4
 	github.com/charmbracelet/huh v1.0.0
 	github.com/fatih/color v1.19.0
 	github.com/getsentry/sentry-go v0.44.1
@@ -22,7 +24,6 @@ require (
 	github.com/alecthomas/atomic v0.1.0-alpha2 // indirect
 	github.com/anacrolix/btree v0.1.1 // indirect
 	github.com/anacrolix/chansync v0.7.0 // indirect
-	github.com/anacrolix/dht/v2 v2.23.0 // indirect
 	github.com/anacrolix/envpprof v1.5.0 // indirect
 	github.com/anacrolix/generics v0.2.0 // indirect
 	github.com/anacrolix/go-libutp v1.4.0 // indirect
@@ -33,7 +34,6 @@ require (
 	github.com/anacrolix/multiless v0.4.0 // indirect
 	github.com/anacrolix/stm v0.5.0 // indirect
 	github.com/anacrolix/sync v0.6.0 // indirect
-	github.com/anacrolix/upnp v0.1.4 // indirect
 	github.com/anacrolix/utp v0.2.0 // indirect
 	github.com/atotto/clipboard v0.1.4 // indirect
 	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect