test(agentcompat): add integration scenarios

Co-authored-by: naiba/CloudCode <hi+cloudcode@nai.ba>

integration/agentcompat/internal/scenario/held_legacy_fm_cleanup.go

@@ -0,0 +1,21 @@
+//go:build linux
+
+package scenario
+
+import "context"
+
+type heldLegacyFMCapabilityCleanup struct {
+	Unregister func(context.Context) error
+	Absence    func(context.Context) error
+	Cancel     func(context.Context) error
+}
+
+func pushHeldLegacyFMCapabilityCleanup(stack *heldCleanupStack, cleanup heldLegacyFMCapabilityCleanup) error {
+	if err := stack.Push(heldCleanupAction{name: "unregister FM capability", cleanup: cleanup.Unregister}); err != nil {
+		return err
+	}
+	if err := stack.Push(heldCleanupAction{name: "restore FM IOStream baseline and absence", cleanup: cleanup.Absence}); err != nil {
+		return err
+	}
+	return stack.Push(heldCleanupAction{name: "cancel FM capability", cleanup: cleanup.Cancel})
+}