dex/networks/eth: ETH fidelity bonds contract

This diff introduces the solidity contract that supports posting fidelity
bonds on ETH.

dex/networks/eth/bondcontracts/updatecontract.sh

@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+# This script does 3 things:
+#
+# 1. Updates contract.go to reflect updated solidity code.
+# 2. Generates the runtime bytecoode. This is used to compare against the runtime
+#    bytecode on chain in order to verify that the expected contract is deployed.
+# 3. Updates the bytecode in the harness test.
+
+if [ "$#" -ne 1 ]
+then
+  echo "Usage: $0 version" >&2
+  exit 1
+fi
+
+VERSION=$1
+PKG_NAME=v${VERSION}
+CONTRACT_NAME=ETHBond
+SOLIDITY_FILE=./v${VERSION}/contracts/${CONTRACT_NAME}V${VERSION}.sol
+if [ ! -f ${SOLIDITY_FILE} ]
+then
+    echo "${SOLIDITY_FILE} does not exist" >&2
+    exit 1
+fi
+
+mkdir temp
+
+solc --abi --bin --bin-runtime --overwrite --optimize ${SOLIDITY_FILE} -o ./temp/
+BYTECODE=$(<./temp/${CONTRACT_NAME}.bin-runtime)
+
+cat > "./${PKG_NAME}/BinRuntimeV${VERSION}.go" <<EOF
+// Code generated - DO NOT EDIT.
+// This file is a generated binding and any manual changes will be lost.
+
+package ${PKG_NAME}
+
+const ${CONTRACT_NAME}RuntimeBin = "${BYTECODE}"
+EOF
+
+abigen --abi ./temp/${CONTRACT_NAME}.abi --bin ./temp/${CONTRACT_NAME}.bin --pkg ${PKG_NAME} \
+ --type ${CONTRACT_NAME} --out ./${PKG_NAME}/contract.go
+
+BYTECODE=$(<./temp/${CONTRACT_NAME}.bin)
+sed -i.tmp "s/BOND_V${VERSION}=.*/BOND_V${VERSION}=\"${BYTECODE}\"/" ../../../testing/eth/harness.sh
+# mac needs a temp file specified above.
+rm ../../../testing/eth/harness.sh.tmp
+
+rm -fr temp

dex/networks/eth/bondcontracts/v0/.gitignore

@@ -0,0 +1,12 @@
+# dependencies
+/node_modules
+/typechain-types
+
+# build artifacts
+/artifacts
+/cache
+
+# local network
+/.hardhat
+
+package-lock.json