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>

applications/cli/cli_i.h

@@ -25,7 +25,7 @@ struct CliSession {
     void (*deinit)(void);
     size_t (*rx)(uint8_t* buffer, size_t size, uint32_t timeout);
     void (*tx)(const uint8_t* buffer, size_t size);
-    void (*tx_stdout)(void* _cookie, const char* data, size_t size);
+    void (*tx_stdout)(const char* data, size_t size);
     bool (*is_connected)(void);
 };