feat(core): rename `builds` feature to `build`

Replace the `builds` feature with `build` across the crate, keeping
a backward-compatible alias for the old name.  Update all internal
visibility from `#[doc(hidden)] pub mod` to `pub(crate) mod` and
reorganize the `__private` module into a dedicated `private.rs`.

1 files changed, 3 insertions, 3 deletions

diff --git a/mingling_core/src/any.rs b/mingling_core/src/any.rs
index 3e8fdf0..e922e2e 100644
--- a/mingling_core/src/any.rs
+++ b/mingling_core/src/any.rs
@@ -1,8 +1,8 @@
+use crate::ProgramCollect;
 use crate::error::ChainProcessError;
-use crate::{Grouped, ProgramCollect};
 
-#[doc(hidden)]
-pub mod group;
+mod group;
+pub use group::*;
 
 /// Any type output
 ///