feat(cloudformation): enforce s3 upload for large templates and artif…

[Zee2413]

…acts

Problem

• user was not forced to upload large templates to s3

Solution

• check template size and force user to upload to s3 whenever template is too large or contains local artifact

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[github-actions]

• This pull request implements a feat or fix, so it must include a changelog entry (unless the fix is for an unreleased feature). Review the changelog guidelines.
  • Note: beta or "experiment" features that have active users should announce fixes in the changelog.
  • If this is not a feature or fix, use an appropriate type from the title guidelines. For example, telemetry-only changes should use the telemetry type.

[chrisqm-dev]

• This pull request implements a feat or fix, so it must include a changelog entry (unless the fix is for an unreleased feature). Review the changelog guidelines.

  * Note: beta or "experiment" features that have active users _should_ announce fixes in the changelog.
  * If this is not a feature or fix, use an appropriate type from the [title guidelines](https://github.com/aws/aws-toolkit-vscode/blob/master/CONTRIBUTING.md#pull-request-title). For example, telemetry-only changes should use the `telemetry` type.
  

We should add a changelog for this

[Zee2413]

Relies on aws-cloudformation/cloudformation-languageserver@91fab47 being released but this change is backwards compatible and gracefully degrades to previous behavior.