add license headers

sed -i '1i/*\nCopyright (c) Edgeless Systems GmbH\n\nSPDX-License-Identifier: AGPL-3.0-only\n*/\n' `grep -rL --include='*.go' 'DO NOT EDIT'`
gofumpt -w .

internal/grpc/atlscredentials/atlscredentials.go

@@ -1,3 +1,9 @@
+/*
+Copyright (c) Edgeless Systems GmbH
+
+SPDX-License-Identifier: AGPL-3.0-only
+*/
+
 package atlscredentials
 
 import (

internal/grpc/atlscredentials/atlscredentials_test.go

@@ -1,3 +1,9 @@
+/*
+Copyright (c) Edgeless Systems GmbH
+
+SPDX-License-Identifier: AGPL-3.0-only
+*/
+
 package atlscredentials
 
 import (

internal/grpc/dialer/dialer.go

@@ -1,3 +1,9 @@
+/*
+Copyright (c) Edgeless Systems GmbH
+
+SPDX-License-Identifier: AGPL-3.0-only
+*/
+
 package dialer
 
 import (

internal/grpc/dialer/dialer_test.go

@@ -1,3 +1,9 @@
+/*
+Copyright (c) Edgeless Systems GmbH
+
+SPDX-License-Identifier: AGPL-3.0-only
+*/
+
 package dialer
 
 import (

internal/grpc/grpclog/grplog.go

@@ -1,3 +1,9 @@
+/*
+Copyright (c) Edgeless Systems GmbH
+
+SPDX-License-Identifier: AGPL-3.0-only
+*/
+
 // grpclog provides a logging utilities for gRPC.
 package grpclog
 

internal/grpc/retry/retry.go

@@ -1,3 +1,9 @@
+/*
+Copyright (c) Edgeless Systems GmbH
+
+SPDX-License-Identifier: AGPL-3.0-only
+*/
+
 package retry
 
 import (

internal/grpc/retry/retry_test.go

@@ -1,3 +1,9 @@
+/*
+Copyright (c) Edgeless Systems GmbH
+
+SPDX-License-Identifier: AGPL-3.0-only
+*/
+
 package retry
 
 import (

internal/grpc/testdialer/bufconndialer.go

@@ -1,3 +1,9 @@
+/*
+Copyright (c) Edgeless Systems GmbH
+
+SPDX-License-Identifier: AGPL-3.0-only
+*/
+
 package testdialer
 
 import (