add build for linux/arm64 (#8)

Author: joonas-fi

build-go-project.sh

@@ -133,6 +133,7 @@ gobuildmaybe() {
 binaries() {
 	gobuildmaybe "BUILD_LINUX_AMD64" "linux" "amd64" "_linux-amd64"
 	gobuildmaybe "BUILD_LINUX_ARM" "linux" "arm" "_linux-arm"
+	gobuildmaybe "BUILD_LINUX_ARM64" "linux" "arm64" "_linux-arm64"
 	gobuildmaybe "BUILD_LINUX_RISCV64" "linux" "riscv64" "_linux-riscv64"
 	gobuildmaybe "BUILD_WINDOWS_AMD64" "windows" "amd64" ".exe"
 	gobuildmaybe "BUILD_DARWIN_AMD64" "darwin" "amd64" "_darwin-amd64"