Refactor component/extras into snapshotting

internal/component/snapshots/extras_filesystem.go

@@ -0,0 +1,24 @@
+package snapshots
+
+import (
+	"github.com/FAU-CDI/wisski-distillery/internal/component"
+	"github.com/FAU-CDI/wisski-distillery/internal/models"
+)
+
+// Filesystem implements snapshotting an instnace filesystem
+type Filesystem struct {
+	component.ComponentBase
+}
+
+func (Filesystem) Name() string { return "filesystem" }
+
+// SnapshotNeedsRunning returns if this Snapshotable requires a running instance.
+func (Filesystem) SnapshotNeedsRunning() bool { return false }
+
+// SnapshotName returns a new name to be used as an argument for path.
+func (Filesystem) SnapshotName() string { return "data" }
+
+// Snapshot creates a snapshot of this instance
+func (*Filesystem) Snapshot(wisski models.Instance, context component.StagingContext) error {
+	return context.CopyDirectory(".", wisski.FilesystemBase)
+}