Add makefile rule to compile bindings

Author: jannikluhn

Makefile

@@ -1,5 +1,10 @@
 SHELL := /usr/bin/env bash
 
+lower = $(shell echo '$1' | tr '[:upper:]' '[:lower:]')
+
+CONTRACTS := $(basename $(notdir $(wildcard ./src/*.sol)))
+BINDINGS := $(foreach contract,$(CONTRACTS),$(call lower,$(contract)))
+
 all: forge gen
 .PHONY: all forge gen
 
@@ -8,3 +13,8 @@ forge:
 
 gen:
 	go run gen/gen.go -config genconfig.toml -base-path ./
+
+$(BINDINGS:%=bindings/%.go): forge
+	abigen --abi <(jq '.["abi"]' "out/$(basename $(notdir $@)).sol/$(basename $(notdir $@)).json") --pkg bindings --out $@
+
+bindings: $(BINDINGS:%=bindings/%.go)