Keep the colleague's microbu-esp32c5 tree in this repository

obu-firmware builds against vanetza-idf from microbu-esp32c5/external, but
that tree was gitignored, so a clone of this repository could not build the
firmware it ships. It is now committed here as ordinary files in its own
folder, microbu-esp32c5/: the colleague's commit cf4b99f plus the V2X2MAP
bridge's signature verification (--trust) used on the bench. Nothing is
fetched from or pushed to the colleague's repository; this repository and
its remotes carry everything. The folder's own .gitignore keeps build output,
downloaded components and private key material out, as it did there; the
committed file set is identical to that repository's tracked files.

The ESP32-C5 is still flashed from obu-firmware/, which only takes
vanetza-idf from microbu-esp32c5/, so the two stay separate folders.
FLASHING.md says how to take a newer version of the colleague's tree (copy
it over the folder, rebuild, test, commit).

microbu-esp32c5/external/vanetza-idf/vanetza/asn1/its/PerceivedObject.h

@@ -0,0 +1,96 @@
+/*
+ * Generated by asn1c
+ * From ASN.1 module "CPM-PDU-Descriptions"
+ * 	found in "TR103562v211-CPM.asn"
+ * 	`asn1c -fcompound-names -fincludes-quoted -no-gen-example -R`
+ */
+
+#ifndef	_PerceivedObject_H_
+#define	_PerceivedObject_H_
+
+
+#include "asn_application.h"
+
+/* Including external dependencies */
+#include "Identifier.h"
+#include "TimeOfMeasurement.h"
+#include "ObjectAge.h"
+#include "ObjectConfidence.h"
+#include "ObjectDistanceWithConfidence.h"
+#include "SpeedExtended.h"
+#include "ObjectRefPoint.h"
+#include "DynamicStatus.h"
+#include "constr_SEQUENCE.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Forward declarations */
+struct SensorIdList;
+struct ObjectDistanceWithConfidence;
+struct SpeedExtended;
+struct LongitudinalAcceleration;
+struct LateralAcceleration;
+struct VerticalAcceleration;
+struct CartesianAngle;
+struct ObjectDimension;
+struct ObjectClassDescription;
+struct MatchedPosition;
+
+/* PerceivedObject */
+typedef struct PerceivedObject {
+	Identifier_t	 objectID;
+	struct SensorIdList	*sensorIDList;	/* OPTIONAL */
+	TimeOfMeasurement_t	 timeOfMeasurement;
+	ObjectAge_t	*objectAge;	/* OPTIONAL */
+	ObjectConfidence_t	 objectConfidence;	/* DEFAULT 0 */
+	ObjectDistanceWithConfidence_t	 xDistance;
+	ObjectDistanceWithConfidence_t	 yDistance;
+	struct ObjectDistanceWithConfidence	*zDistance;	/* OPTIONAL */
+	SpeedExtended_t	 xSpeed;
+	SpeedExtended_t	 ySpeed;
+	struct SpeedExtended	*zSpeed;	/* OPTIONAL */
+	struct LongitudinalAcceleration	*xAcceleration;	/* OPTIONAL */
+	struct LateralAcceleration	*yAcceleration;	/* OPTIONAL */
+	struct VerticalAcceleration	*zAcceleration;	/* OPTIONAL */
+	struct CartesianAngle	*yawAngle;	/* OPTIONAL */
+	struct ObjectDimension	*planarObjectDimension1;	/* OPTIONAL */
+	struct ObjectDimension	*planarObjectDimension2;	/* OPTIONAL */
+	struct ObjectDimension	*verticalObjectDimension;	/* OPTIONAL */
+	ObjectRefPoint_t	 objectRefPoint;	/* DEFAULT 0 */
+	DynamicStatus_t	*dynamicStatus;	/* OPTIONAL */
+	struct ObjectClassDescription	*classification;	/* OPTIONAL */
+	struct MatchedPosition	*matchedPosition;	/* OPTIONAL */
+	/*
+	 * This type is extensible,
+	 * possible extensions are below.
+	 */
+	
+	/* Context for parsing across buffer boundaries */
+	asn_struct_ctx_t _asn_ctx;
+} PerceivedObject_t;
+
+/* Implementation */
+extern asn_TYPE_descriptor_t asn_DEF_PerceivedObject;
+extern asn_SEQUENCE_specifics_t asn_SPC_PerceivedObject_specs_1;
+extern asn_TYPE_member_t asn_MBR_PerceivedObject_1[22];
+
+#ifdef __cplusplus
+}
+#endif
+
+/* Referred external types */
+#include "SensorIdList.h"
+#include "ObjectDistanceWithConfidence.h"
+#include "SpeedExtended.h"
+#include "LongitudinalAcceleration.h"
+#include "LateralAcceleration.h"
+#include "VerticalAcceleration.h"
+#include "CartesianAngle.h"
+#include "ObjectDimension.h"
+#include "ObjectClassDescription.h"
+#include "MatchedPosition.h"
+
+#endif	/* _PerceivedObject_H_ */
+#include "asn_internal.h"