Allow configuring pass configs, compile flags, and out_idx directly
inside function bodies using T.annotate_compile_flags(),
T.annotate_pass_configs(), and T.empty()+return. These are stored as
proper PrimFunc attrs (tilelang_compile_flags, tilelang_pass_configs,
tilelang_out_idx) instead of monkey-patching, and merged at compile
time. Annotations can be placed before or after tensor type annotations.
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>