feat: add CMOU and candlestick pattern wrappers
- add CMOU momentum wrapper in `momentum_indicators.go` - add `Cdl*` pattern-recognition wrappers in `pattern_recognitions.go` - register `TA_CMOU` and `TA_CDL*` symbols in `loader.go` - add corresponding function pointer signatures in `functions.go` - sync `README.md` with CMOU and pattern-recognition API docs
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