feat(backend): establish gin sqlite service skeleton

backend-api/cmd/migrate/main_test.go

@@ -0,0 +1,16 @@
+package main
+
+import "testing"
+
+func TestRunRejectsMissingAndUnknownCommandsBeforeOpeningDatabase(t *testing.T) {
+	tests := [][]string{
+		nil,
+		{"unknown"},
+		{"up", "extra"},
+	}
+	for _, arguments := range tests {
+		if err := run(arguments); err == nil {
+			t.Fatalf("run(%v) error = nil", arguments)
+		}
+	}
+}