chore: prepare v1.1.0 release

Update version numbers across Rust, Python, and documentation files to 1.1.0. Enhance the .gitignore to include macOS dSYM files and plans directory. Introduce new dependencies in the Rust core library and update the README to reflect recent performance benchmarks and backtesting engine capabilities. Add new artifacts to the benchmarks manifest and improve documentation for the backtesting engine API.

src/cycle/ht_dcperiod.rs

@@ -1,4 +1,3 @@
-use super::common::compute_ht_core;
 use numpy::{IntoPyArray, PyArray1, PyReadonlyArray1};
 use pyo3::prelude::*;
 
@@ -8,7 +7,6 @@ pub fn ht_dcperiod<'py>(
     py: Python<'py>,
     close: PyReadonlyArray1<'py, f64>,
 ) -> PyResult<Bound<'py, PyArray1<f64>>> {
-    let prices = close.as_slice()?;
-    let core = compute_ht_core(prices);
-    Ok(core.dc_period.into_pyarray(py))
+    let result = ferro_ta_core::cycle::ht_dcperiod(close.as_slice()?);
+    Ok(result.into_pyarray(py))
 }