allow untrusted workspaces to be debugged

Per "guidance for debug extensions" as noted in the Workspace Trust Extension Guide.

As is you'd explicit have to trust the workspace to have the extension enabled, as we don't have extra commands that "do" something from the workspace the official guideline is to claim full support. This is done with this PR and I've verified that without it the extension is disabled, with it, it is enabled (no need to increase the vscode minimal version).