Workflow modifications for official pipeline release

[ReinierCC]

Added:

• Hash Version for azure/login action.
• Changelog step back
• New step to find the vsix file
• Step to add vsix file to the release back.

Tested the operation of finding the vsix on local fork:

Using npx for vsce command for one off package and publish. Reference: https://docs.npmjs.com/cli/v9/commands/npx?v=true

[ReinierCC]

Updating based on discussion with @Tatsinnit