migration file to create bite; create bite repository

add transaction index and raw log to bite table
work on converter for bite event
update bite repository, replace guy with 32byte lad; create bite converter to entity
update field type for bite event; start on bite transformer
finish bite event transformer

db/migrations/1534295713_create_bite_table.down.sql

@@ -0,0 +1 @@
+DROP TABLE maker.bite;

db/migrations/1534295713_create_bite_table.up.sql

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+CREATE TABLE maker.bite (
+  id        SERIAL PRIMARY KEY,
+  header_id INTEGER NOT NULL REFERENCES headers (id) ON DELETE CASCADE,
+  ilk       bytea,
+  lad       bytea,
+  ink       VARCHAR,
+  art       VARCHAR,
+  iArt      VARCHAR,
+  tab       NUMERIC,
+  flip      VARCHAR,
+  tx_idx    INTEGER NOT NUll,
+  raw_log   JSONB
+)