chore: enable vscode config for home-manager
also add gpgme.dev package per https://discourse.nixos.org/t/gpgme-json-not-in-path-while-setting-up-for-mailvelope-extension/72148/2?u=ajhalili2006
Signed-off-by: Andrei Jiroh Halili <ajhalili2006@andreijiroh.dev>