feat: initialize Kurdistan SDK - independent fork of Polkadot SDK

substrate/frame/revive/rpc/migrations/0001_create_transaction_hashes.sql

@@ -0,0 +1,22 @@
+-- Useful commands:
+--
+-- Set DATABASE_URL environment variable.
+-- export DATABASE_URL=sqlite:///$HOME/eth_rpc.db
+--
+-- Create DB:
+-- cargo sqlx database create
+--
+-- Run migration manually:
+-- cargo sqlx migrate run
+--
+-- Update compile time artifacts:
+-- cargo sqlx prepare
+CREATE TABLE IF NOT EXISTS transaction_hashes (
+  transaction_hash BLOB NOT NULL PRIMARY KEY,
+  transaction_index INTEGER NOT NULL,
+  block_hash BLOB NOT NULL
+);
+
+CREATE INDEX IF NOT EXISTS idx_block_hash ON transaction_hashes (
+	block_hash
+);