Invert If Language support for PHP

This extension includes PHP for the (Invert If)[https://marketplace.visualstudio.com/items?itemName=1nVitr0.invert-if] Visual Studio Code extension.

It is in very early alpha and depends on an outdated PHP generator. Expect some bugs and non-functioning commands.

Known Issues

• The generator does NOT respect logical operator precedence:
  • (a || b) && c will be generated as a || b && c, which is the same as a || (b && c)