Console improvements

[brandonkelly]

Description

Adds new methods to craft\console\Controller for outputting nicely-formatted notes, etc:

• note()
• success()
• failure()
• tip()
• warning()

Example:

$message = <<<EOD
**This is a success message!**
The operation was a complete success!
EOD;

$this->success($message);

✅ This is a success message!
   The operation was a complete success!

There’s also a new do() method, which takes a callback method, and outputs info before and after the callback is executed:

$this->do('Doing the thing', function() {
    // ...
});

 → Doing the thing … ✓

Finally, there’s new file-handling methods (which call do() internally):

• createDirectory()
• writeToFile()
• writeJson()