feat(outdated): add long option, no details by default

[aparajita]

Previously, by default the outdated commands displayed a “Details” column which usually contained the URL to the package repo. As the URL could be quite long, on narrow terminals it would cause the table to wrap in a way which ruined the table borders.

This commit hides the “Details” column by default, and displays the column if --long is passed to the command.

[aparajita]

@zkochan I updated the tests for outdated, but now I realize that all of the other tests will fail because details are not shown by default. There are three possible ways to solve this:

• Show details by default, hide them with some other option.
• Add '--long' to all of the test exec statements.
• Modify the output in all of the tests (which I really don't want to do).

[zkochan]

@zkochan I updated the tests for outdated, but now I realize that all of the other tests will fail because details are not shown by default.
...

• Modify the output in all of the tests (which I really don't want to do).

But you did that. I see that you updated the outputs and added new test cases for outdated --long. And only one test fails that you should look into

[zkochan]

Please, document this new flag of outdated in cmd/help.ts

[aparajita]

But you did that.

I wasn't thinking clearly... I was thinking that the change in the outdated output would affect other commands, but of course it won't. 🙄