mmproxy/contrib: Add script for monero block generation

bin/darkfi-mmproxy/contrib/generate-blocks.sh

@@ -0,0 +1,25 @@
+#!/bin/sh
+set -e
+
+DATA='
+    {
+      "jsonrpc": "2.0",
+      "id": 0,
+      "method": "generateblocks",
+      "params": {
+        "amount_of_blocks": 2000000,
+        "wallet_address": "44AFFq5kSiGBoZ4NMDwYtN18obc8AemS33DBLWs3H7otXft3XjrpDtQGv7SqSsaBYBb98uNbr2VBBEt7f2wfn3RVGQBEP3A",
+        "starting_nonce": 0
+      }
+    }
+'
+
+curl "http://127.0.0.1:18081/json_rpc" -d "$DATA" \
+	-H 'Content-Type: application/json' &
+
+cat <<EOF
+Now monerod should be generating the blocks.
+You can periodically type 'print_height' in the monerod console to
+see the progress. At 2M blocks, RandomX activates and the proxy is
+usable.
+EOF