Shorten inspect on AbstractController::Base and ActionDispatch::Request

[p8]

Calling controller in the debug console generates an endless stream of characters.
This shortens it to only the class name but we can probably add some useful information (action_methods?).

controller.inspect
# => "#<MyController:0x00000000005028>"

Inspect on ActionDispatch::Request is shortened to relevant attributes:

request.inspect
# => "#<ActionDispatch::Request request_method=POST, original_url=https://glu.ttono.us/path/of/some/uri?mapped=1, remote_ip=1.2.3.4, media_type=application/x-www-form-urlencoded>"

[hahmed]

Nice work @p8 i really like this change

[tenderlove]

Can you add the # on the outside so it looks more like a regular Object#inspect?

$ ruby -e'p Object.new.inspect'
"#<Object:0x00007f979b858df8>"

Thank you for submitting this!

[p8]

I've also moved the # to the front and created another PR to fix this for other implementations:
#39477 For example for StrongParameters.

[rails-bot]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.
Thank you for your contributions.

[p8]

It's probably better to split this in two separate PR's.
I'll split it into one for AbstractController::Base and one for ActionDispatch::Request.

[p8]

I'm closing this to create two separate PR's.