feat: initial commit — unarr CLI

Search, inspect, stream, and download torrents from the terminal.
Replaces the entire *arr stack with a single binary.

cmd/unarr/main.go

@@ -0,0 +1,7 @@
+package main
+
+import "github.com/torrentclaw/torrentclaw-cli/internal/cmd"
+
+func main() {
+	cmd.Execute()
+}