Squashed 'external/toxcore/c-toxcore/' changes from 640e6cace..e58eb27a8

e58eb27a8 fix(toxav): remove extra copy of video frame on encode Tested and works, but there might be alignment issues and other stuff.
206ea3530 refactor: Explicitly pass dependencies to constructors.
7cefa93cf fix(toxencryptsave): Wipe salt and passkey after usage.
7c3be2342 refactor: Add file/line to tox-bootstrapd logging.
f84e8cdce refactor: Move loglogdata out of network.c.
390f7db06 refactor: Move random and memory OS-specifics to `os_*` files.
REVERT: 640e6cace fix(toxav): remove extra copy of video frame on encode Tested and works, but there might be alignment issues and other stuff.

git-subtree-dir: external/toxcore/c-toxcore
git-subtree-split: e58eb27a84f9fa0cd996868e079f39e90a5c04b6

toxcore/tox_attributes.h

@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright © 2022-2025 The TokTok team.
+ */
+
+/**
+ * nonnull attributes for GCC/Clang and Cimple.
+ *
+ * This file is a modified version of c-toxcore/toxcore/attributes.h with a
+ * `tox_` prefix added to the macros to avoid conflicts with client code.
+ */
+#ifndef C_TOXCORE_TOXCORE_TOX_ATTRIBUTES_H
+#define C_TOXCORE_TOXCORE_TOX_ATTRIBUTES_H
+
+/* No declarations here. */
+
+//!TOKSTYLE-
+
+#ifndef __clang__
+#define _Nonnull
+#define _Nullable
+#endif
+
+#ifdef SPARSE
+#define tox_bitwise __attribute__((bitwise))
+#else
+#define tox_bitwise
+#endif
+
+//!TOKSTYLE+
+
+#endif /* C_TOXCORE_TOXCORE_TOX_ATTRIBUTES_H */