Support Add plugin flow coming from TTK

[maisarissi]

To support Add plugin flow coming from TTK, we need to provide an additional parameter so they can specify the folder we should be generating the files in:

kiota.openApiExplorer.searchOrOpenApiDescription:
{
      kind: "Plugin",
      type: "ApiPlugin",
      source: "ttk",
      ttkContext,
      projectPath: "c:/app"
}

If the projectPath is not provided, Kiota should use the temp folder.

After creating the files, if the source is ttk, Kiota needs to call TTK back.

Acceptance Criteria

1. One should be able to provide a projectPath parameter to create the clients/plugins to an specific folder.
2. If projectPath is not provided, Kiota should create default to the temp folder.
3. If source is provided, Kiota should call/complete the generation as expected based on the source.
4. Relative paths should not be allowed. If a relative path is provided, Kiota should thrown an error "Relative path is not supported for projectPath parameter".