Squashed 'external/toxcore/c-toxcore/' changes from e29e185c03..f1df709b87

f1df709b87 feat: add ngc events
1b6c907235 refactor: Make event dispatch ordered by receive time.
b7f9367f6f test: Upgrade cppcheck, fix some warnings.
766e62bc89 chore: Use `pkg_search_module` directly in cmake.
00ff078f91 cleanup: Use target_link_libraries directly in cmake.
c58928cc89 chore: Add `IMPORTED_TARGET` to pkg-config packages.
895a6af122 cleanup: Remove NaCl support.
41dfb1c1c0 fix: unpack enum function names in event impl generator
447666d1a1 chore: Disable targets for cross-compilation.
572924e924 chore: Build a docker image with coverage info in it.
415cb78f5e cleanup: Some portability/warning fixes for Windows builds.
425216d9ec fix: Correct a use-after-free and fix some memory leaks.
4b1cfa3e08 refactor: Change all enum-like `#define` sequences into enums.
d3c2704fa9 chore: Fix make_single_file to support core-only.
0ce46b644e refactor: Change the `TCP_PACKET_*` defines into an enum.
22cd38ad50 adopt event impl generation tool to #2392
f31ea1088a add the event impl generation tool
4e603bb613 refactor: Use `enum-from-int` rule from tokstyle.
19d8f180d6 chore: Update github actions `uses`.
6a895be0c7 test: Make esp32 build actually try to instantiate tox.
65d09c9bfb cleanup: Remove test net support.
REVERT: e29e185c03 feat: add ngc events

git-subtree-dir: external/toxcore/c-toxcore
git-subtree-split: f1df709b8792da4c0e946d826b11df77d565064d

other/fun/strkey.c

@@ -2,7 +2,7 @@
  *
  * Generates Tox's key pairs, checking if a certain string is in the public key.
  *
- * Requires sodium or nacl library.
+ * Requires sodium library.
  *
  * There seem to be some problems with the code working on Windows -- it works
  * when built in debug mode with MinGW 4.8, but it doesn't work correctly when
@@ -45,7 +45,7 @@
 
 #define PRINT_TRIES_COUNT
 
-static void print_key(unsigned char *key)
+static void print_key(const unsigned char *key)
 {
     for (size_t i = 0; i < crypto_box_PUBLICKEYBYTES; ++i) {
         if (key[i] < 16) {
@@ -125,7 +125,7 @@ int main(int argc, char *argv[])
             }
         } while (!found);
     } else {
-        unsigned char *p = public_key + offset;
+        const unsigned char *p = public_key + offset;
 
         do {
 #ifdef PRINT_TRIES_COUNT