[FL-3690] Libraries cleanup; u2f crypto rework to use mbedtls (#3234)

* examples: plugins: utilize fal_embedded
* libs: removed fnv1a_hash
* furi: added FURI_PACKED; apps, libs: changed to use FURI_PACKED
* lib: mbedtls: using custom config
* lib: toolbox: removed md5, switched to mbedtls
* targets: f18: link fix
* lib: added mbedtls_cfg.h
* apps: nfc: explicit dependency on libmbedtls
* u2f: reworking to mbedtls
* u2f: replaced sha256 & hmac with mbedtls
* u2f: functional rework using mbedtls
* libs: dropped micro-ecc
* u2f: dropped old implementation
* toolbox: removed sha256 impl
* mcheck() for mbedtls
* libs: removed libmisc; split into smaller libs
* apps: debug: fixed display_test
* apps: include cleanups
* fbt: fixed VERSIONCOMSTR
* furi: added FURI_CHECK_RETURN
* lib: removed qrcode
* cleanup
* fbt: lint_py+format_py: fixed excessive command length
* api: Removed bzero from f7
* api: Removed bzero from f18
* Bump API Symbols

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

furi/core/common_defines.h

@@ -17,6 +17,10 @@ extern "C" {
 #define FURI_WEAK __attribute__((weak))
 #endif
 
+#ifndef FURI_PACKED
+#define FURI_PACKED __attribute__((packed))
+#endif
+
 #ifndef FURI_IS_IRQ_MASKED
 #define FURI_IS_IRQ_MASKED() (__get_PRIMASK() != 0U)
 #endif
@@ -47,6 +51,10 @@ void __furi_critical_exit(__FuriCriticalInfo info);
 #define FURI_CRITICAL_EXIT() __furi_critical_exit(__furi_critical_info);
 #endif
 
+#ifndef FURI_CHECK_RETURN
+#define FURI_CHECK_RETURN __attribute__((__warn_unused_result__))
+#endif
+
 #ifdef __cplusplus
 }
 #endif