Initial project scaffold: five quant strategies for Hyperliquid Testnet

Set up the directory structure and wrote placeholder logic for:

- Order Book Imbalance: trades on L2 bid/ask skew
- Iceberg/TWAP detection: follows whale accumulation patterns
- Funding rate arbitrage: delta-neutral carry on perp funding
- Pairs trading: BTC/ETH spread mean reversion
- Avellaneda-Stoikov market making: optimal bid/ask quoting

Also added shared risk manager, portfolio tracker, and a plain-language strategy walkthrough in docs/.

config/avellaneda_stoikov.yaml

@@ -0,0 +1,14 @@
+# Avellaneda-Stoikov Market Making Strategy
+strategy:
+  name: AvellanedaStoikov
+  instrument: BTC-USD-PERP
+  gamma: 0.1
+  sigma: 0.02
+  T: 1.0
+  k: 1.5
+  min_spread: 0.0001
+  max_inventory: 0.01
+
+risk:
+  max_drawdown_pct: 0.03
+  inventory_hard_limit: 0.015