Keep vanetza-idf in obu-firmware, so a plain clone builds the firmware

obu-firmware builds against the vanetza-idf C-ITS library, which until now
came from the colleague's microbu-esp32c5 tree beside the repository and was
not tracked here, so a clone of this repository could not build the firmware
it ships. The library alone is now part of obu-firmware, as
obu-firmware/external/vanetza-idf: their external/vanetza-idf at commit
cf4b99f, unchanged (9775 files; see its PROVENANCE.md). CMake takes it from
there by default; -DVANETZA_IDF_DIR still points the build elsewhere.

The rest of the colleague's tree (their own VAM firmware, PKI tooling,
station-link Python tools, the V2X2MAP bridge) stays out of this repository
and gitignored; nothing is pushed to their repository. NOTES.md, docs/06,
TODO.md and the pcap verifier's usage line point at the new location.

obu-firmware/external/vanetza-idf/vanetza/asn1/its/GicPart.h

@@ -0,0 +1,79 @@
+/*
+ * Generated by asn1c
+ * From ASN.1 module "IVI"
+ * 	found in "ISO19321.asn"
+ * 	`asn1c -fcompound-names -fincludes-quoted -no-gen-example -R`
+ */
+
+#ifndef	_GicPart_H_
+#define	_GicPart_H_
+
+
+#include "asn_application.h"
+
+/* Including external dependencies */
+#include "Direction.h"
+#include "NativeInteger.h"
+#include "IviType.h"
+#include "IviPurpose.h"
+#include "LaneStatus.h"
+#include "IVI_DriverCharacteristics.h"
+#include "RoadSignCodes.h"
+#include "constr_SEQUENCE.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Forward declarations */
+struct ZoneIds;
+struct VarLengthNumber;
+struct LanePositions;
+struct VehicleCharacteristicsList;
+struct ConstraintTextLines1;
+
+/* GicPart */
+typedef struct GicPart {
+	struct ZoneIds	*detectionZoneIds;	/* OPTIONAL */
+	struct VarLengthNumber	*its_Rrid;	/* OPTIONAL */
+	struct ZoneIds	*relevanceZoneIds;	/* OPTIONAL */
+	Direction_t	*direction;	/* OPTIONAL */
+	struct ZoneIds	*driverAwarenessZoneIds;	/* OPTIONAL */
+	long	*minimumAwarenessTime;	/* OPTIONAL */
+	struct LanePositions	*applicableLanes;	/* OPTIONAL */
+	IviType_t	 iviType;
+	IviPurpose_t	*iviPurpose;	/* OPTIONAL */
+	LaneStatus_t	*laneStatus;	/* OPTIONAL */
+	struct VehicleCharacteristicsList	*vehicleCharacteristics;	/* OPTIONAL */
+	IVI_DriverCharacteristics_t	*driverCharacteristics;	/* OPTIONAL */
+	long	*layoutId;	/* OPTIONAL */
+	long	*preStoredlayoutId;	/* OPTIONAL */
+	RoadSignCodes_t	 roadSignCodes;
+	struct ConstraintTextLines1	*extraText;	/* OPTIONAL */
+	/*
+	 * This type is extensible,
+	 * possible extensions are below.
+	 */
+	
+	/* Context for parsing across buffer boundaries */
+	asn_struct_ctx_t _asn_ctx;
+} GicPart_t;
+
+/* Implementation */
+extern asn_TYPE_descriptor_t asn_DEF_GicPart;
+extern asn_SEQUENCE_specifics_t asn_SPC_GicPart_specs_1;
+extern asn_TYPE_member_t asn_MBR_GicPart_1[16];
+
+#ifdef __cplusplus
+}
+#endif
+
+/* Referred external types */
+#include "ZoneIds.h"
+#include "VarLengthNumber.h"
+#include "LanePositions.h"
+#include "VehicleCharacteristicsList.h"
+#include "ConstraintTextLines1.h"
+
+#endif	/* _GicPart_H_ */
+#include "asn_internal.h"