Support parameter name comment

[zommerfelds]

Support for /* paramName= */ foo

It would be really nice I was able to get something like this:

class Main {
	static function main() {
                func(
                        /* paramA= */ 123,
                        /* paramB= */ 456,
                        /* paramC= */ 987);
	}
}

This type of comment is recommended by the Google Java styleguide, and I find it quite useful:
https://errorprone.info/bugpattern/ParameterName

With onePerLine this is what haxe-formatter currently produces:

			new MonsterComponent(
				/* checkSightContact= */ type == Alien1, /* playerInSight= */
				false, /* lineOfSight= */
				lineOfSightObj, /* playerInSightWarning= */
				text, /* patrol= */
				patrol, /* curPatrolIndex= */
				0,
				/* doneMoving= */
				false
			),