CI: Split /bin/build artifacts * subcommand (#66005)

* Split go files

* Modify publishartifacts.go

* Split main

* FIXME: Temp add GCSCopy to gcloud/storage

* Fix lint

* Exported flags

* Update starlark - make drone

* Further backend lint fixes

* Add fallback_test.go

* Fix go imports order

* make drone

* Remove GCSCopy from static assets

* Remove GCSCopy from storybook

* Fix lint

* Remove GCSCopy

* Remove success logline

* drone yaml cleanup

* Add artifacts-editions flag

* Fix starlark

* Add default sting slice in artifacts packages command

pkg/build/cmd/flags.go

@@ -51,4 +51,22 @@ var (
 		Name:  "tag",
 		Usage: "Grafana version tag",
 	}
+	securityFlag = cli.BoolFlag{
+		Name:  "security",
+		Usage: "Security release",
+	}
+	srcFlag = cli.StringFlag{
+		Name:  "src-bucket",
+		Value: "grafana-prerelease",
+		Usage: "Google Cloud Storage bucket",
+	}
+	securityDestBucketFlag = cli.StringFlag{
+		Name:  "security-dest-bucket",
+		Usage: "Google Cloud Storage bucket for security packages (or $SECURITY_DEST_BUCKET)",
+	}
+	destFlag = cli.StringFlag{
+		Name:  "dest-bucket",
+		Value: "grafana-downloads",
+		Usage: "Google Cloud Storage bucket for published packages",
+	}
 )