feat(stepfunctions): Supporting Express Executions in Execution Details

[l0minous]

Problem

View Execution Details by Execution ARN command currently only supports Standard Executions

Solution

• Extending Lambda Client to support getFunctionConfiguration (used when viewing executions that have a Lambda state)
• Extending activation.ts to differentiate between standard and express executions, express executions prompt for a second input box to pass in startTime
• Calling CloudWatchLogsClient to be used alongside lambda client in ApiHandler
• Passing startTime through meta tag

Verification

---

• Treat all work as PUBLIC. Private feature/x branches will not be squash-merged at release time.
• Your code changes must meet the guidelines in CONTRIBUTING.md.
• License: I confirm that my contribution is made under the terms of the Apache 2.0 license.

[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.

[laileni-aws]

nit:
Do we have dispose events for this Webview?

[l0minous]

There arent any currently but maybe later if something that needs to be disposed is added