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>

firmware.scons

@@ -164,8 +164,6 @@ fwenv.AppendUnique(
         "-Wl,--wrap,_free_r",
         "-Wl,--wrap,_calloc_r",
         "-Wl,--wrap,_realloc_r",
-        "-u",
-        "_printf_float",
         "-n",
         "-Xlinker",
         "-Map=${TARGET}.map",
@@ -181,6 +179,7 @@ fwelf = fwenv["FW_ELF"] = fwenv.Program(
     "${FIRMWARE_BUILD_CFG}",
     sources,
     LIBS=[
+        "print",
         "flipper${TARGET_HW}",
         "furi",
         "freertos",