Make printf great again (#1438)

* Printf lib: wrap *printf* functions
* Printf lib, FW: drop sprintf. Dolphin: dump timestamp as is, wo asctime.
* FW: remove sniprintf, wrap assert functions
* Printf lib: wrap putc, puts, putchar
* Printf: a working but not thread-safe concept.
* Poorly wrap fflush
* stdglue: buffers
* Core: thread local buffers
* Core: move stdglue to thread api, add ability to get FuriThread instance of current thread.
* RPC tests: replace sprintf with snprintf
* Applications: use new stdout api
* Printf lib: wrap more printf-like and stdout functions
* Documentation
* Apps: snprintf size fixes

Co-authored-by: あく <alleteam@gmail.com>

lib/toolbox/random_name.c

@@ -36,7 +36,7 @@ void set_random_name(char* name, uint8_t max_name_size) {
     uint8_t prefix_i = rand() % COUNT_OF(prefix);
     uint8_t suffix_i = rand() % COUNT_OF(suffix);
 
-    sniprintf(name, max_name_size, "%s_%s", prefix[prefix_i], suffix[suffix_i]);
+    snprintf(name, max_name_size, "%s_%s", prefix[prefix_i], suffix[suffix_i]);
     // Set first symbol to upper case
     name[0] = name[0] - 0x20;
 }