Selenium should announce when Recording has started

[ansarmie]

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Description

Support Accessibility regarding Announcing that the Recording has started Issue #964

Motivation and Context

The Selenium IDE extension has some cases where some assistive technologies cannot interact with or cannot display information to the user. The idea in this PR is to add simple attributes so when the Recording session starts the user can hear it.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the contributing document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

• Add aria-label and role alert to the Selenium Recording indicator.

[claassistantio]

All committers have signed the CLA.

[tourdedave]

👏