Feature: create simple routing api and replace existing routes

[jonwaldstein]

Description

This introduces a basic routing api and replaces existing Next Gen form routes with the givewp-route param.

It's purpose is to clean up how we're handling our custom query param based routing so it's easier to create and understand them.

When declaring a route, the uri will turn into /?givewp-route=$uri.

Example:

Get route url

Route::url('donate') // http://{givewp.com}/?givewp-route=donate

Simple GET route using invokable class

Route::get('donation-form-view', InvokableDonationFormViewController::class);

This will call give(InvokableDonationFormViewController::class)->__invoke(array $request);

GET Route using callable

Route::get('donation-form-view', static function (array $request) {
    $routeData = DonationFormViewRouteData::fromRequest($request);

    return give(DonationFormViewController::class)->show($routeData);
});

POST Route using callable

Route::post('donation-form-view-preview', static function (array $request) {
  $routeData = DonationFormPreviewRouteData::fromRequest($request);

  return give(DonationFormViewController::class)->preview($routeData);
});

Affects

This does technically touch all the working Next Gen routes for viewing, previewing, and donating.

Visuals

N/A

Testing Instructions

Just make sure viewing, previewing, and donating a next gen form still works properly.

Pre-review Checklist

• Acceptance criteria satisfied and marked in related issue
• Relevant @unreleased tags included in DocBlocks
• Includes unit tests
• Reviewed by the designer (if follows a design)
• Self Review of code and UX completed

[jonwaldstein]

@kjohnson this is ready for review. It's not meant to be full-featured, just useful enough for our use cases and we can expand later if need be. I'll be using this for the new receipt routing.

[kjohnson]

This looks great. Nice to see a Route::get() syntax that is clean and easy to reason about.

[kjohnson]

These inline routes are beautiful.

[jonwaldstein]

I know right?! It's a start lol