Rewrite the context to support cross exchange strategy

[bludnic]

Current context:

type TBotContext<T extends IBotConfiguration> = {
  control: IBotControl;
  config: T;
  command: "start" | "stop" | "process";
  onStart: boolean;
  onStop: boolean;
  onProcess: boolean;
}

• [x] Add persistent storage ctx.store
• [ ] Split ctx.config into ctx.exchanges and ctx.params (botParams)

Exchanges config sample:

{
  OKX: {
    name: "OKX Account",
    apiKey: "your-api-key",
    secretKey: "your-secret",
    password: "your-password",
  },
  BYBIT: {
    name: "ByBit Account",
    apiKey: "your-api-key",
    secretKey: "your-secret",
  },
  BYBIT2: {
    name: "ByBit Account #2",
    apiKey: "your-api-key",
    secretKey: "your-secret",
  },
}

[bludnic]

Proposed Context

type TBotContext<T extends IBotConfiguration> = {
  params: P; // strategy params
  config: T; // bot config
  store: S; // persistent state
  command: "start" | "stop" | "process";
  onStart: boolean;
  onStop: boolean;
  onProcess: boolean;
}

[bludnic]

See PR #55