v0.1.0 first panel

The first cut splits the schema-aware tree (uniconfig-core) from the dlangui app (uniconfig) so DevCentr can adopt the engine without a GUI dependency.

Bundled profiles cover Git config, DUB recipes, EditorConfig, Terraform tfvars, and UniConfig’s own SDLang settings. On-the-fly inference still loads files that have no profile.