init: estudio_mercados analysis from fn_registry

data/binance_btcusdt_orderbook.csv

@@ -0,0 +1,41 @@
+price,qty,side
+66793.89,0.08639,bid
+66793.88,0.00072,bid
+66793.87,0.00008,bid
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+66793.85,0.05024,bid
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+66792.0,0.00008,bid
+66791.83,0.0039,bid
+66791.67,0.00016,bid
+66791.66,0.06358,bid
+66793.9,1.94694,ask
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+66795.74,0.00008,ask
+66796.0,0.0012,ask
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+66797.08,0.11709,ask
+66797.09,0.00029,ask
+66797.3,0.00222,ask