Enabled ARM support

[zfz7]

Hey,

I wanted to add support for the ARM runtime. I updated the LambdaPackagerTask plugin to add support for a architecture param. You can configure the the buildLambdaRelease task like:

buildLambdaRelease {
    architecture.set(Architecture.LINUX_X64) // or Architecture.LINUX_ARM64
}

Testing X86

./gradlew clean buildLambdaRelease // built with x86 

aws lambda create-function --function-name Kotlin-Native \ 
--handler sample.kexe --zip-file fileb:///Users/daniel/workspace/kotlin-native-aws-lambda-runtime/sample/build/lambda/release/sample.zip  \ 
--runtime provided.al2 \
--architecture x86_64 \
--role arn:aws:iam::<AWS_ACC>:role/<ROLE_NAME \
--tracing-config Mode=Active

aws lambda invoke --cli-binary-format raw-in-base64-out --function-name Kotlin-Native --payload '{"command": "Say Hi!"}' output.json 

cat output.json
{
                 "statusCode": 200,
                 "headers": {
                   "Content-Type": "application/json"
                 },
                 "isBase64Encoded": false,
                 "body": "Hello world"
             }

Testing ARM

./gradlew clean buildArmLambda // built with ARM by updating build.gradle.kts in sample project

aws lambda create-function --function-name Kotlin-Native \ 
--handler sample.kexe --zip-file fileb:///Users/daniel/workspace/kotlin-native-aws-lambda-runtime/sample/build/lambda/release/sample.zip  \ 
--runtime provided.al2 \
--architecture arm64 \
--role arn:aws:iam::<AWS_ACC>:role/<ROLE_NAME \
--tracing-config Mode=Active

aws lambda invoke --cli-binary-format raw-in-base64-out --function-name Kotlin-Native --payload '{"command": "Say Hi!"}' output.json 

cat output.json
{
                 "statusCode": 200,
                 "headers": {
                   "Content-Type": "application/json"
                 },
                 "isBase64Encoded": false,
                 "body": "Hello world"
             }

Question

• I would love to add a bundleLibcrypt param or runtime param that will pull the libcrypt.so.1 into the zip file, but wasn't sure if thats possible / something you would want to do.

[trueangle]

Thanks for the effort @zfz7.
However, this is only true for macOS machine builds. Arm64 arch build fails on a Linux machine as Kotlin repo misses necessary dependencies. I will mention this limitation in the docs.