feat(refacto): move everything in internal package

This allows to install katenary with `go install` and to clean up the
project folder.

internal/generator/labels/labelstructs/dependencies_test.go

@@ -0,0 +1,14 @@
+package labelstructs
+
+import "testing"
+
+func TestDependenciesLabel(t *testing.T) {
+	ts := "- name: mongodb"
+	tc, _ := DependenciesFrom(ts)
+	if len(tc) != 1 {
+		t.Errorf("Expected DependenciesLabel to have 1 item, got %d", len(tc))
+	}
+	if tc[0].Name != "mongodb" {
+		t.Errorf("Expected DependenciesLabel to contain 'mongodb', got %s", tc[0].Name)
+	}
+}