refractor(build): move builder tasks to the builder sub package. Add tests.

pkg/prebuild/builder/fsp.go

@@ -0,0 +1,33 @@
+// apparmor.d - Full set of apparmor profiles
+// Copyright (C) 2021-2024 Alexandre Pujol <alexandre@pujol.io>
+// SPDX-License-Identifier: GPL-2.0-only
+
+package builder
+
+import (
+	"github.com/roddhjav/apparmor.d/pkg/prebuild/cfg"
+	"github.com/roddhjav/apparmor.d/pkg/util"
+)
+
+var (
+	regFullSystemPolicy = util.ToRegexRepl([]string{
+		`r(PU|U)x,`, `rPx,`,
+	})
+)
+
+type FullSystemPolicy struct {
+	cfg.Base
+}
+
+func init() {
+	RegisterBuilder(&FullSystemPolicy{
+		Base: cfg.Base{
+			Keyword: "fsp",
+			Msg:     "Prevent unconfined transitions in profile rules",
+		},
+	})
+}
+
+func (b FullSystemPolicy) Apply(profile string) string {
+	return regFullSystemPolicy.Replace(profile)
+}