This is a custom command used by the VS Code extension to retrieve the GPR project file uploaded by the ALS, allowing us to get the path to the project file currently in use.
We introduce a new type to represent the request results:
export type ProjectFileResponse = string; // The Path to the GPR project file
And a new command with out arguments:
command: als-project-file
Returning the project file of the loaded project like this:
result: ProjectFileResponse