feat: Add ability to package LLRT as a layer

[mrhornsby]

New feature to package LLRT in a layer so that it can be shared across multiple lambdas with the same binary type.

closes #19

[mrhornsby]

Hi @tmokmss, I didn't change the package.json so thought it was best to avoid committing any updates to the package-lock.json files but it seems that won't pass the build so I've added the changes for these now 🤞

[tmokmss]

Thanks for working on this!

[mrhornsby]

Hi @tmokmss , I'm just testing all the changes above and came across a strange bug. I think I've got to the bottom of it, but wanted to get your thoughts.

Where you define the arch field you're comparing objects. In my current testing setup I think I've managed to get two different versions of the aws-cdk-lib because I've linked a handful of local projects.

Would it be better to compare the name fields:

const arch = props.architecture?.name == Architecture.ARM_64.name ? 'arm64' : 'x64';

I don't imagine this would happen often, but I think it is safer. Wdyt?

[mrhornsby]

Hey @tmokmss , I've pushed all my changes. I've reverted the package-lock.json changes, but this seems to break the action pipeline. I'm not sure if I'm doing something wrong? Thanks again for reviewing this 🙏

[tmokmss]

Hi I fixed the build issue and confirmed it works in my environment. Thanks!

[tmokmss]

Thanks!