snapshots: Prepare for restructuring

This commit renames the 'wisski' package to 'dis' and prepares the
snapshots component for restructuring.

internal/dis/distillery.go

@@ -0,0 +1,36 @@
+package dis
+
+import (
+	"context"
+
+	"github.com/FAU-CDI/wisski-distillery/internal/component"
+)
+
+// Distillery represents a WissKI Distillery
+//
+// It is the main structure used to interact with different components.
+type Distillery struct {
+	// core holds the core of the distillery
+	component.Core
+
+	// Upstream holds information to connect to the various running
+	// distillery components.
+	//
+	// NOTE(twiesing): This is intended to eventually allow full remote management of the distillery.
+	// But for now this will just hold upstream configuration.
+	Upstream Upstream
+
+	// components hold references to the various components of the distillery.
+	components
+}
+
+// Upstream contains the configuration for accessing remote configuration.
+type Upstream struct {
+	SQL         string
+	Triplestore string
+}
+
+// Context returns a new Context belonging to this distillery
+func (dis *Distillery) Context() context.Context {
+	return context.Background()
+}