Feature-90 minute timeout for on-demand capacity mode

We would like to be able to run functions for longer than 15 minutes in on-demand mode. 90 minutes would be parity with the Lambda managed instances mode recently released.

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**Description**

see blog post:

https://aws.amazon.com/blogs/compute/announcing-90-minute-function-timeout-on-aws-lambda-managed-instances/

**Additional context**

We still have several jobs that must run on ECS because it is either too costly to rearchitect them for 15 minute time outs or impractical due to the unit of work requiring more time. We would value a single place to run our jobs rather than having some on Lambda and some on ECS. We are much less interested in adding LMI as yet another variant in our platform.

まず、要求された90分のタイムアウトと、リンク先のAWS Lambdaのmanaged-instancesに関するブログ記事を確認します。payloadには、リポジトリのファイル、テスト、実装のエントリーポイントが特定されていません。完了の定義は、最大90分の関数実行に対応するオンデマンド容量のサポートを定義して提供し、要求されたパリティに一致する動作にすることです。

索引モデルが issue の本文から書いたものです。