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/support/ANY.c

@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2004-2017 Lev Walkin <vlm@lionet.info>. All rights reserved.
+ * Redistribution and modifications are permitted subject to BSD license.
+ */
+#include "asn_internal.h"
+#include "ANY.h"
+
+asn_OCTET_STRING_specifics_t asn_SPC_ANY_specs = {
+    sizeof(ANY_t),
+    offsetof(ANY_t, _asn_ctx),
+    ASN_OSUBV_ANY
+};
+asn_TYPE_operation_t asn_OP_ANY = {
+    OCTET_STRING_free,
+#if !defined(ASN_DISABLE_PRINT_SUPPORT)
+    OCTET_STRING_print,
+#else
+    0,
+#endif  /* !defined(ASN_DISABLE_PRINT_SUPPORT) */
+    OCTET_STRING_compare,
+    OCTET_STRING_copy,
+#if !defined(ASN_DISABLE_BER_SUPPORT)
+    OCTET_STRING_decode_ber,
+    OCTET_STRING_encode_der,
+#else
+    0,
+    0,
+#endif  /* !defined(ASN_DISABLE_BER_SUPPORT) */
+#if !defined(ASN_DISABLE_XER_SUPPORT)
+    OCTET_STRING_decode_xer_hex,
+    ANY_encode_xer,
+#else
+    0,
+    0,
+#endif  /* !defined(ASN_DISABLE_XER_SUPPORT) */
+#if !defined(ASN_DISABLE_JER_SUPPORT)
+    OCTET_STRING_decode_jer_hex,
+    ANY_encode_jer,
+#else
+    0,
+    0,
+#endif  /* !defined(ASN_DISABLE_JER_SUPPORT) */
+#if !defined(ASN_DISABLE_OER_SUPPORT)
+    0,
+    0,
+#else
+    0,
+    0,
+#endif  /* !defined(ASN_DISABLE_OER_SUPPORT) */
+#if !defined(ASN_DISABLE_UPER_SUPPORT)
+    ANY_decode_uper,
+    ANY_encode_uper,
+#else
+    0,
+    0,
+#endif  /* !defined(ASN_DISABLE_UPER_SUPPORT) */
+#if !defined(ASN_DISABLE_APER_SUPPORT)
+    ANY_decode_aper,
+    ANY_encode_aper,
+#else
+    0,
+    0,
+#endif  /* !defined(ASN_DISABLE_APER_SUPPORT) */
+    0,  /* Random fill is not defined for ANY type */
+    0  /* Use generic outmost tag fetcher */
+};
+asn_TYPE_descriptor_t asn_DEF_ANY = {
+    "ANY",
+    "ANY",
+    &asn_OP_ANY,
+    0, 0, 0, 0,
+    {
+#if !defined(ASN_DISABLE_OER_SUPPORT)
+        0,
+#endif  /* !defined(ASN_DISABLE_OER_SUPPORT) */
+#if !defined(ASN_DISABLE_UPER_SUPPORT) || !defined(ASN_DISABLE_APER_SUPPORT)
+        0,
+#endif  /* !defined(ASN_DISABLE_UPER_SUPPORT) || !defined(ASN_DISABLE_APER_SUPPORT) */
+#if !defined(ASN_DISABLE_JER_SUPPORT)
+        0,
+#endif  /* !defined(ASN_DISABLE_JER_SUPPORT) */
+        asn_generic_no_constraint
+    },  /* No constraints */
+    0, 0,  /* No members */
+    &asn_SPC_ANY_specs,
+};