Generates the welded Mix project and its initial lockfile.
Summary
Functions
@spec build_path(Weld.Plan.t()) :: Path.t()
@spec package_files( Weld.Plan.t(), keyword() ) :: [String.t()]
@spec project!(Weld.Plan.t()) :: map()
@spec root_tooling_candidates() :: [String.t()]
@spec root_tooling_files(Weld.Plan.t()) :: [String.t()]