feat(/dev): send FeatureDevEvent telemetry event

[sannicm]

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)

Description

For it is needed to send a telemetry event using the codewhisperer client. This PR is adding the specific /dev feature dev event that will let us measure usage of one of said ab testing events.

Checklist

• [x] My code follows the code style of this project
• [n/a] I have added tests to cover my changes
• [n/a] A short description of the change has been added to the CHANGELOG if the change is customer-facing in the IDE.
• [n/a] I have added metrics for my changes (if required)

License

I confirm that my contribution is made under the terms of the Apache 2.0 license.

[sannicm]

/retryBuilds

[sannicm]

/retryBuilds