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FLASHING.md says how to take a newer version of the colleague's tree (copy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/r2/WrappedExtensionContainer.h

@@ -0,0 +1,75 @@
+/*
+ * Generated by asn1c
+ * From ASN.1 module "CAM-PDU-Descriptions"
+ * 	found in "TS103900v231-CAM.asn"
+ * 	`asn1c -fcompound-names -fincludes-quoted -no-gen-example -fprefix=Vanetza_ITS2_ -R`
+ */
+
+#ifndef	_Vanetza_ITS2_WrappedExtensionContainer_H_
+#define	_Vanetza_ITS2_WrappedExtensionContainer_H_
+
+
+#include "asn_application.h"
+
+/* Including external dependencies */
+#include "ExtensionContainerId.h"
+#include "ANY.h"
+#include "asn_ioc.h"
+#include "TwoWheelerContainer.h"
+#include "EHorizonLocationSharingContainer.h"
+#include "VeryLowFrequencyContainer.h"
+#include "PathPredictionContainer.h"
+#include "GeneralizedLanePositionsContainer.h"
+#include "VehicleMovementControlContainer.h"
+#include "OPEN_TYPE.h"
+#include "constr_CHOICE.h"
+#include "constr_SEQUENCE.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Dependencies */
+typedef enum Vanetza_ITS2_WrappedExtensionContainer__containerData_PR {
+	Vanetza_ITS2_WrappedExtensionContainer__containerData_PR_NOTHING,	/* No components present */
+	Vanetza_ITS2_WrappedExtensionContainer__containerData_PR_TwoWheelerContainer,
+	Vanetza_ITS2_WrappedExtensionContainer__containerData_PR_EHorizonLocationSharingContainer,
+	Vanetza_ITS2_WrappedExtensionContainer__containerData_PR_VeryLowFrequencyContainer,
+	Vanetza_ITS2_WrappedExtensionContainer__containerData_PR_PathPredictionContainer,
+	Vanetza_ITS2_WrappedExtensionContainer__containerData_PR_GeneralizedLanePositionsContainer,
+	Vanetza_ITS2_WrappedExtensionContainer__containerData_PR_VehicleMovementControlContainer
+} Vanetza_ITS2_WrappedExtensionContainer__containerData_PR;
+
+/* Vanetza_ITS2_WrappedExtensionContainer */
+typedef struct Vanetza_ITS2_WrappedExtensionContainer {
+	Vanetza_ITS2_ExtensionContainerId_t	 containerId;
+	struct Vanetza_ITS2_WrappedExtensionContainer__containerData {
+		Vanetza_ITS2_WrappedExtensionContainer__containerData_PR present;
+		union Vanetza_ITS2_WrappedExtensionContainer__Vanetza_ITS2_containerData_u {
+			Vanetza_ITS2_TwoWheelerContainer_t	 TwoWheelerContainer;
+			Vanetza_ITS2_EHorizonLocationSharingContainer_t	 EHorizonLocationSharingContainer;
+			Vanetza_ITS2_VeryLowFrequencyContainer_t	 VeryLowFrequencyContainer;
+			Vanetza_ITS2_PathPredictionContainer_t	 PathPredictionContainer;
+			Vanetza_ITS2_GeneralizedLanePositionsContainer_t	 GeneralizedLanePositionsContainer;
+			Vanetza_ITS2_VehicleMovementControlContainer_t	 VehicleMovementControlContainer;
+		} choice;
+		
+		/* Context for parsing across buffer boundaries */
+		asn_struct_ctx_t _asn_ctx;
+	} containerData;
+	
+	/* Context for parsing across buffer boundaries */
+	asn_struct_ctx_t _asn_ctx;
+} Vanetza_ITS2_WrappedExtensionContainer_t;
+
+/* Implementation */
+extern asn_TYPE_descriptor_t asn_DEF_Vanetza_ITS2_WrappedExtensionContainer;
+extern asn_SEQUENCE_specifics_t asn_SPC_Vanetza_ITS2_WrappedExtensionContainer_specs_1;
+extern asn_TYPE_member_t asn_MBR_Vanetza_ITS2_WrappedExtensionContainer_1[2];
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif	/* _Vanetza_ITS2_WrappedExtensionContainer_H_ */
+#include "asn_internal.h"