Enable developers to customize the built-in receivers more

[seratch]

Description

The error handling parts of the built-in receivers are not customizable for developers.

For instance, if a developer would like to customize HTTPReceiver's error handling logic (e.g., send a different HTTP status code in accordance with Bolt error code, add extra lines of code such as logging), there is no way apart from creating their own custom receiver.

• https://github.com/slackapi/bolt-js/blob/%40slack/bolt%403.3.0/src/receivers/HTTPReceiver.ts#L164-L173
• https://github.com/slackapi/bolt-js/blob/%40slack/bolt%403.3.0/src/receivers/HTTPReceiver.ts#L259-L261

The built-in receivers can accept functions as part of constructor arguments for customizing those parts.

We may want to add more customizable points than the error handling parts. Please let us know if you have thoughts or ideas about this topic.

See also: slackapi/bolt-python#273
(Please note that, as Bolt for Python / Java do not follow the concept "Receiver", the solution can be a bit different though the goal in the issue is the same)

What type of issue is this? (place an x in one of the [ ])

• bug
• enhancement (feature request)
• question
• documentation related
• example code related
• testing related
• discussion

Requirements (place an x in each of the [ ])

• I've read and understood the Contributing guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.
• I've searched for any related issues and avoided creating a duplicate issue.