Resolve incorrect order of lambda layers with context flag @aws-cdk/aws-lambda:recognizeLayerVersion

[fbuchlak]

Based on discussions 1560, 1580 and pull request #4

New cdk projects created with cdk init provides set of feature flags. Specifically @aws-cdk/aws-lambda:recognizeVersionProps which changes order of lambda layers (see Function.renderLayers).

This pull request changes ids of created layers (based on their priorities described in corresponding constructs) and allows to create test templates with AppProps.

There might be a problem if you want to add additional layers to bref construct along with mentioned flag.
To resolve such problems, you may need to "name" additional layers correctly (so they are sorted as you wish in previously mentioned renderLayers method).

[mnapoli]

Woww this is crazy 🤯 I don't understand why they did that, but thank you for figuring this out!