feat: add missing SocketMode options

[misscoded]

Summary

Adds missing SocketModeOptions to App init. Resolves #2292.

New options are made available as seen below:

/** Initialization */
const app = new App({
  token: process.env.SLACK_BOT_TOKEN,
  socketMode: true,
  appToken: process.env.SLACK_APP_TOKEN,
  logLevel: LogLevel.DEBUG,
  // New SocketModeOptions 
  socketModeOptions: {
    autoReconnectEnabled: true,
    clientPingTimeout: 420,
    pingPongLoggingEnabled: true,
    serverPingTimeout: 150,
  },
});

To test:

• [ ] Spin up TS-friendly Bolt project (https://github.com/slack-samples/bolt-ts-starter-template)
• [ ] Symlink @slack/bolt-js to this branch in project
• [ ] Verify that types exist
• [ ] Verify that changing these values reflects the same changes when logging the SocketMode receiver after initialization (i.e., autoReconnectEnabled, serverPingTimeoutMS, clientPingTimeoutMS, pingPongLoggingEnabled).

Requirements (place an x in each [ ])

• [x] I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• [x] I've read and agree to the Code of Conduct.

[codecov[bot]]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 93.46%. Comparing base (d6f9ce7) to head (ea3b4b8).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2735      +/-   ##
==========================================
+ Coverage   93.44%   93.46%   +0.01%     
==========================================
  Files          37       37              
  Lines        7675     7693      +18     
  Branches      669      669              
==========================================
+ Hits         7172     7190      +18     
  Misses        498      498              
  Partials        5        5              

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[WilliamBergamin]

Nice 💯 I also have the same question as @mwbrooks 🤔 having it in its own object could also help us with the separation of concern

[zimeg]

📚 Quick question if the new options might be nice to reference from this page?

🔗 https://docs.slack.dev/tools/bolt-js/concepts/socket-mode