chore: vendor swabble and add speech usage strings

Swabble/Sources/swabble/Commands/HealthCommand.swift

@@ -0,0 +1,16 @@
+import Commander
+import Foundation
+
+@MainActor
+struct HealthCommand: ParsableCommand {
+    static var commandDescription: CommandDescription {
+        CommandDescription(commandName: "health", abstract: "Health probe")
+    }
+
+    init() {}
+    init(parsed: ParsedValues) {}
+
+    mutating func run() async throws {
+        print("ok")
+    }
+}