Improve error message for invalid resource URI

[alexislefebvre]

Is your feature request related to a problem? Please describe.

I tried to provide a resource with an invalid URI: /list-books.

I encountered this error:

Invalid resource URI: must be a valid URI with a scheme and optional path.

And the corresponding URI is not shown.

It comes from this line:

php-sdk/src/Schema/Resource.php

Lines 73 to 75 in e485fde

	if (!preg_match(self::URI_PATTERN, $uri)) {
	throw new InvalidArgumentException('Invalid resource URI: must be a valid URI with a scheme and optional path.');
	}

Describe the solution you'd like

The error message may show the invalid data ($uri) to help debugging.

Something like this:

     throw new InvalidArgumentException('Invalid resource URI: '.$uri.' must be a valid URI with a scheme and optional path.'); 

Describe alternatives you've considered
.

Additional context
.