hack: add license headers tool

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

docker-bake.hcl

@@ -7,7 +7,7 @@ group "pre-checkin" {
 }
 
 group "validate" {
-  targets = ["lint", "vendor-validate"]
+  targets = ["lint", "vendor-validate", "license-validate"]
 }
 
 target "build" {
@@ -69,3 +69,15 @@ target "publish" {
   output = ["type=cacheonly"]
   secret = ["id=NODE_AUTH_TOKEN,env=NODE_AUTH_TOKEN"]
 }
+
+target "license-validate" {
+  dockerfile = "./hack/dockerfiles/license.Dockerfile"
+  target = "validate"
+  output = ["type=cacheonly"]
+}
+
+target "license-update" {
+  dockerfile = "./hack/dockerfiles/license.Dockerfile"
+  target = "update"
+  output = ["."]
+}