Expose root to injected components

[lunarraid]

Description of change

This adds an options argument containing the pixi root to injected components, bringing them more in feature parity with native elements. It also moves the addition of the root object to the injected component before the applyProps call so that the initial applyProps call has access to it the same way native elements do.

Fixes: https://github.com/pixijs/pixi-react/issues/419

Pre-Merge Checklist

• [x] Tests and/or benchmarks are included
• [x] Lint process passed (npm run lint)
• [x] Tests passed (npm run test)

[codesandbox-ci[bot]]

This pull request is automatically built and testable in CodeSandbox.

To see build info of the built libraries, click here or the icon next to each commit SHA.

Latest deployment of this branch, based on commit 84785ed170bf3bdd331e45021a378ccdbe0469cb:

Sandbox	Source
sandbox	Configuration