feat(dynamics): add PlusDI, MinusDI, PlusDM, MinusDM indicators

Complete thin Dx-composition wrapper indicators with full test coverage:

- PlusDi/MinusDi: Directional Indicator wrappers (DiPlus/DiMinus from Dx)
- PlusDm/MinusDm: Directional Movement wrappers (DmPlus/DmMinus from Dx)
- Individual validation tests per indicator directory (TALib, Skender, bounds)
- Combined unit tests (DiDm.Tests.cs) and validation tests (DiDm.Validation.Tests.cs)
- Quantower wrappers + tests for all 4 indicators
- PineScript v6 implementations with compensated RMA
- Normalized .md documentation for all indicators and categories
- 182 tests passing, 0 failures

lib/volume/evwma/Evwma.md

@@ -1,5 +1,7 @@
 # EVWMA: Elastic Volume Weighted Moving Average
 
+> *Volume is the one technical indicator that never lies.*
+
 | Property         | Value                            |
 | ---------------- | -------------------------------- |
 | **Category**     | Volume                        |
@@ -16,8 +18,6 @@
 - Requires `> period` bars of warmup before first valid output (IsHot = true).
 - Validated against TA-Lib, Skender, and Tulip reference implementations where available.
 
-> "Volume is the one technical indicator that never lies." — Joe Granville
-
 ## Introduction
 
 EVWMA (Elastic Volume Weighted Moving Average) is a volume-adaptive moving average that weights each bar's contribution to the average by its volume relative to a rolling volume sum. High-volume bars shift the average more aggressively toward the current price; low-volume bars barely nudge it. The "elastic" behavior emerges from volume-proportional blending: the smoothing factor is not fixed (like EMA's alpha) but varies dynamically with each bar's volume share.