F10: add Chaikin Money Flow, Chaikin Oscillator, Force Index and Ease of Movement

- Rust core: cmf.rs (Chaikin Money Flow — summed money-flow volume over
  summed volume, bounded to [-1, +1]), chaikin_oscillator.rs (Chaikin
  Oscillator — the MACD of the ADL, EMA(ADL, fast) - EMA(ADL, slow)),
  force_index.rs (Elder's Force Index — EMA of price change scaled by
  volume), ease_of_movement.rs (Arms' Ease of Movement — SMA of distance
  travelled per unit of volume). Each with a full Indicator impl,
  runnable doctest and reference / property / warmup / reset /
  batch==streaming tests.
- Python: PyChaikinMoneyFlow / PyChaikinOscillator / PyForceIndex /
  PyEaseOfMovement PyO3 classes + module registration + .pyi stubs.
- Node: explicit ChaikinMoneyFlowNode / ChaikinOscillatorNode /
  ForceIndexNode / EaseOfMovementNode; index.d.ts and index.js updated.
- WASM: WasmChaikinMoneyFlow / WasmChaikinOscillator / WasmForceIndex /
  WasmEaseOfMovement.
- Wiki: Indicator-ChaikinMoneyFlow/ChaikinOscillator/ForceIndex/
  EaseOfMovement.md plus a new "Oscillators" sub-table in
  Indicators-Overview.md and entries in Home.md.

cargo fmt + clippy (core/wickra/data/wasm/node) clean; 402 core tests,
25 data tests and 57 doctests green.

crates/wickra-core/src/lib.rs

@@ -45,12 +45,12 @@ pub mod indicators;
 pub use error::{Error, Result};
 pub use indicators::{
     Adl, Adx, AdxOutput, Aroon, AroonOscillator, AroonOutput, Atr, AwesomeOscillator,
-    BollingerBands, BollingerBandwidth, BollingerOutput, Cci, Cmo, Coppock, Dema, Donchian,
-    DonchianOutput, Dpo, Ema, HistoricalVolatility, Hma, Kama, Keltner, KeltnerOutput,
-    MacdIndicator, MacdOutput, MassIndex, Mfi, Mom, Natr, Obv, PercentB, Pmo, Ppo, Psar, Roc,
-    RollingVwap, Rsi, Sma, Smma, StdDev, StochRsi, Stochastic, StochasticOutput, Tema, Trima, Trix,
-    Tsi, UlcerIndex, UltimateOscillator, VolumePriceTrend, Vortex, VortexOutput, Vwap, Vwma,
-    WilliamsR, Wma, Zlema, T3,
+    BollingerBands, BollingerBandwidth, BollingerOutput, Cci, ChaikinMoneyFlow, ChaikinOscillator,
+    Cmo, Coppock, Dema, Donchian, DonchianOutput, Dpo, EaseOfMovement, Ema, ForceIndex,
+    HistoricalVolatility, Hma, Kama, Keltner, KeltnerOutput, MacdIndicator, MacdOutput, MassIndex,
+    Mfi, Mom, Natr, Obv, PercentB, Pmo, Ppo, Psar, Roc, RollingVwap, Rsi, Sma, Smma, StdDev,
+    StochRsi, Stochastic, StochasticOutput, Tema, Trima, Trix, Tsi, UlcerIndex, UltimateOscillator,
+    VolumePriceTrend, Vortex, VortexOutput, Vwap, Vwma, WilliamsR, Wma, Zlema, T3,
 };
 pub use ohlcv::{Candle, Tick};
 pub use traits::{BatchExt, Chain, Indicator};