Add build script

.gitignore

@@ -0,0 +1 @@
+builds

build.sh

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+mkdir -p builds
+
+go tool dist list | grep -v android | grep -v darwin | grep -v ios | grep -v wasip1 | awk -F '/' '{printf "echo Compiling %s/%s; env CGO_ENABLED=1 GOOS=%s GOARCH=%s go build -o builds/snake.%s-%s\n",$1,$2,$1,$2,$1,$2 }' | sh