Release v0.1.0

Added

• AWS.Lambda.Runtime — the custom runtime loop: long-polls the Lambda
  Runtime API, dispatches each invocation to your handler within a
  supervised, deadline-bounded task, and reports the result or failure back
  to Lambda without crashing the sandbox.
• AWS.Lambda.Runtime.API — a dependency-free :inets/:httpc client for
  the Lambda Runtime API (2018-06-01).
• AWS.Lambda.Runtime.Context — per-invocation context assembled from the
  Lambda-Runtime-* response headers and the function's environment.
• AWS.Lambda.Runtime.Handler — the behaviour your function implements, plus
  resolution of the _HANDLER environment variable / compile-time config.
• AWS.Lambda.Runtime.Application — the OTP application supervising the
  runtime loop, with a config :aws_lambda_runtime, start_runtime: false
  escape hatch for environments (like this library's own test suite) that
  shouldn't start it.
• AWS.Lambda.Runtime.MixRelease and AWS.Lambda.Runtime.Release — mix release configuration and steps that package a function for Lambda's
  provided.al2023 runtime, including the bootstrap entrypoint and
  Lambda-tuned vm.args/env.sh.
• mix aws_lambda.build — packages a function's Lambda release inside the
  Elixir builder Docker image and downloads the resulting deployment zip.