Add save function

lib/commands/ContextProvider.tsx

@@ -0,0 +1,14 @@
+import { createContext, useContext } from "react";
+import type { PropsWithChildren } from "react";
+import { CommandInterface } from ".";
+import type { ContentList } from "../content/types";
+import type { CommandInterfaceCallbacks } from "./types";
+
+const commandInterface = new CommandInterface();
+const CommandContext = createContext(commandInterface);
+const setCommandCallbacks = (callbacks: CommandInterfaceCallbacks) => commandInterface.callbacks = {...commandInterface.callbacks, ...callbacks};
+const setContents = (content: ContentList) => commandInterface.content = content;
+const useCommands = () => ({cmdContext: useContext(CommandContext), updateCallbacks: setCommandCallbacks, setContents});
+const CommandsProvider = (props: PropsWithChildren<{}>) => <CommandContext.Provider value={commandInterface} {...props} />;
+
+export { CommandsProvider, useCommands };