Detect open folder in VS Code is TTK project and change output path for Copilot Plugin

[jthake]

Is your feature request related to a problem? Please describe the problem.

If I create a copilot plugin in Kiota when my VS Code open folder is a teams toolkit project, it creates the manfiest by default in root folder.

Client library/SDK language

None

Describe the solution you'd like

If I have a Teams toolkit project open, there are various out of the box folder structures like "appPackage" that exist. The plugin manifests that TTK creates go here by default. Kiota should do the same.

Additional context

No response