chore: vendor swabble and add speech usage strings

Swabble/Sources/swabble/Commands/SetupCommand.swift

@@ -0,0 +1,26 @@
+import Commander
+import Foundation
+import Swabble
+
+@MainActor
+struct SetupCommand: ParsableCommand {
+    static var commandDescription: CommandDescription {
+        CommandDescription(commandName: "setup", abstract: "Write default config")
+    }
+
+    @Option(name: .long("config"), help: "Path to config JSON") var configPath: String?
+
+    init() {}
+    init(parsed: ParsedValues) {
+        self.init()
+        if let cfg = parsed.options["config"]?.last { self.configPath = cfg }
+    }
+
+    mutating func run() async throws {
+        let cfg = SwabbleConfig()
+        try ConfigLoader.save(cfg, at: self.configURL)
+        print("wrote config to \(self.configURL?.path ?? SwabbleConfig.defaultPath.path)")
+    }
+
+    private var configURL: URL? { self.configPath.map { URL(fileURLWithPath: $0) } }
+}